Reformat changelog release headings with link

CHANGELOG.md

@@ -1,6 +1,7 @@
 # Changelog
 
-## 1.9.0 (2023-07-11)
+## [1.9.0] - 2023-07-11
+[1.9.0]: https://github.com/crystal-lang/crystal/releases/1.9.0
 ### Breaking changes
 
 #### stdlib
@@ -227,7 +228,8 @@
 - *(ci)* Build Windows portable and installer packages on CI ([#13578](https://github.com/crystal-lang/crystal/pull/13578), thanks @HertzDevil)
 - *(ci)* Split Windows library build scripts from CI ([#13478](https://github.com/crystal-lang/crystal/pull/13478), thanks @HertzDevil)
 
-## 1.8.2 (2023-05-08)
+## [1.8.2] - 2023-05-08
+[1.8.2]: https://github.com/crystal-lang/crystal/releases/1.8.2
 
 ### Standard Library
 
@@ -258,7 +260,8 @@
 
 - Backport bugfixes to release/1.8 for release 1.8.2 ([#3435](https://github.com/crystal-lang/crystal/pull/13435), thanks @straight-shoota)
 
-## 1.8.1 (2023-04-20)
+## [1.8.1] - 2023-04-20
+[1.8.1]: https://github.com/crystal-lang/crystal/releases/1.8.1
 
 ### Standard Library
 
@@ -271,7 +274,8 @@
 - Fix `String#gsub` with empty match at multibyte char ([#13342](https://github.com/crystal-lang/crystal/pull/13342), thanks @straight-shoota)
 - Fix PCRE2 `Regex` with more than 127 named capture groups ([#13349](https://github.com/crystal-lang/crystal/pull/13349), thanks @HertzDevil)
 
-## 1.8.0 (2023-04-14)
+## [1.8.0] - 2023-04-14
+[1.8.0]: https://github.com/crystal-lang/crystal/releases/1.8.0
 
 ### Language
 
@@ -540,7 +544,8 @@
 - [CI] Fix add PCRE2 to GHA cache for win job ([#13089](https://github.com/crystal-lang/crystal/pull/13089), thanks @straight-shoota)
 - [CI] Pin `use_pcre` in build environments where PCRE2 is not yet available ([#13102](https://github.com/crystal-lang/crystal/pull/13102), thanks @straight-shoota)
 
-## 1.7.2 (2023-01-23)
+## [1.7.2] - 2023-01-23
+[1.7.2]: https://github.com/crystal-lang/crystal/releases/1.7.2
 ### Standard Library
 
 #### Runtime
@@ -561,7 +566,8 @@
 
 - Update `VERSION` to `1.7.2-dev` ([#12993](https://github.com/crystal-lang/crystal/pull/12993), thanks @straight-shoota)
 
-## 1.7.1 (2023-01-17)
+## [1.7.1] - 2023-01-17
+[1.7.1]: https://github.com/crystal-lang/crystal/releases/1.7.1
 
 ### Tools
 
@@ -573,7 +579,8 @@
 
 - Update `VERSION` to 1.7.1-dev ([#12950](https://github.com/crystal-lang/crystal/pull/12950), thanks @straight-shoota)
 
-## 1.7.0 (2023-01-09)
+## [1.7.0] - 2023-01-09
+[1.7.0]: https://github.com/crystal-lang/crystal/releases/1.7.0
 
 ### Language
 
@@ -795,7 +802,8 @@
 - Couple of ameba lint issues fixed ([#12685](https://github.com/crystal-lang/crystal/pull/12685), thanks @Sija)
 - Use context-specific heredoc deliminators ([#12816](https://github.com/crystal-lang/crystal/pull/12816), thanks @straight-shoota)
 
-## 1.6.2 (2022-11-03)
+## [1.6.2] - 2022-11-03
+[1.6.2]: https://github.com/crystal-lang/crystal/releases/1.6.2
 
 ### Language
 
@@ -814,7 +822,8 @@
 
 - **(security)** CI: Update to OpenSSL 3.0.7 for bundled lib on Windows ([#12712](https://github.com/crystal-lang/crystal/pull/12712), thanks @beta-ziliani)
 
-## 1.6.1 (2022-10-21)
+## [1.6.1] - 2022-10-21
+[1.6.1]: https://github.com/crystal-lang/crystal/releases/1.6.1
 
 ### Compiler
 
@@ -847,7 +856,8 @@
 - Disable failing specs on Windows CI ([#12585](https://github.com/crystal-lang/crystal/pull/12585), thanks @HertzDevil)
 - Detect `llvm-configXX` while building compiler ([#12602](https://github.com/crystal-lang/crystal/pull/12602), thanks @HertzDevil)
 
-## 1.6.0 (2022-10-06)
+## [1.6.0] - 2022-10-06
+[1.6.0]: https://github.com/crystal-lang/crystal/releases/1.6.0
 
 ### Language
 
@@ -1097,7 +1107,8 @@
 - Add icon and metadata to Windows Crystal compiler binary ([#12494](https://github.com/crystal-lang/crystal/pull/12494), thanks @HertzDevil)
 - Remove `spec/win32_std_spec.cr` and `spec/generate_windows_spec.sh` ([#12282](https://github.com/crystal-lang/crystal/pull/12282), [#12549](https://github.com/crystal-lang/crystal/pull/12549), thanks @HertzDevil and @straight-shoota)
 
-## 1.5.1 (2022-09-07)
+## [1.5.1] - 2022-09-07
+[1.5.1]: https://github.com/crystal-lang/crystal/releases/1.5.1
 
 ### Standard Library
 
@@ -1138,7 +1149,8 @@
 - Update distribution-scripts ([#12333](https://github.com/crystal-lang/crystal/pull/12333), thanks @straight-shoota)
 - [CI] Bumping xcode to 13.4.1 ([#12264](https://github.com/crystal-lang/crystal/pull/12264), thanks @beta-ziliani)
 
-## 1.5.0 (2022-07-06)
+## [1.5.0] - 2022-07-06
+[1.5.0]: https://github.com/crystal-lang/crystal/releases/1.5.0
 
 ### Language
 
@@ -1315,7 +1327,8 @@
 - [CI] Pin version of ubuntu base image for circleci jobs ([#12030](https://github.com/crystal-lang/crystal/pull/12030), thanks @straight-shoota)
 - Samples: avoid `Symbol` variables ([#11923](https://github.com/crystal-lang/crystal/pull/11923), thanks @HertzDevil)
 
-## 1.4.1 (2022-04-22)
+## [1.4.1] - 2022-04-22
+[1.4.1]: https://github.com/crystal-lang/crystal/releases/1.4.1
 
 ### Standard Library
 
@@ -1338,7 +1351,8 @@
 
 - Compiler: remove duplicate instance vars once we know them all ([#11995](https://github.com/crystal-lang/crystal/pull/11995), thanks @asterite)
 
-## 1.4.0 (2022-04-06)
+## [1.4.0] - 2022-04-06
+[1.4.0]: https://github.com/crystal-lang/crystal/releases/1.4.0
 
 ### Language
 
@@ -1542,15 +1556,17 @@
 - Use `be_empty` expectations in more specs ([#11937](https://github.com/crystal-lang/crystal/pull/11937), thanks @HertzDevil)
 - [CI] Update distribution-scripts ([#11969](https://github.com/crystal-lang/crystal/pull/11969), thanks @straight-shoota)
 
-## 1.3.2 (2022-01-18)
+## [1.3.2] - 2022-01-18
+[1.3.2]: https://github.com/crystal-lang/crystal/releases/1.3.2
 
 ### Standard Library
 
 #### Text
 
 - Fix buffer overflow in `String#index` ([#11747](https://github.com/crystal-lang/crystal/pull/11747), thanks @asterite, @straight-shoota)
 
-## 1.3.1 (2022-01-13)
+## [1.3.1] - 2022-01-13
+[1.3.1]: https://github.com/crystal-lang/crystal/releases/1.3.1
 
 ### Standard Library
 
@@ -1573,7 +1589,8 @@
 
 - Fix typos ([#11725](https://github.com/crystal-lang/crystal/pull/11725), thanks @kianmeng)
 
-## 1.3.0 (2022-01-06)
+## [1.3.0] - 2022-01-06
+[1.3.0]: https://github.com/crystal-lang/crystal/releases/1.3.0
 
 ### Compiler
 
@@ -1813,7 +1830,8 @@
 - [CI] Remove `libatomic_ops` ([#11598](https://github.com/crystal-lang/crystal/pull/11598), thanks @straight-shoota)
 - Update NOTICE Copyright year to 2022 ([#11679](https://github.com/crystal-lang/crystal/pull/11679), thanks @matiasgarciaisaia)
 
-## 1.2.2 (2021-11-10)
+## [1.2.2] - 2021-11-10
+[1.2.2]: https://github.com/crystal-lang/crystal/releases/1.2.2
 
 ### Compiler
 
@@ -1846,7 +1864,8 @@
 - Update distribution-scripts ([#11404](https://github.com/crystal-lang/crystal/pull/11404), thanks @straight-shoota)
 - [CI] Fix pcre download URL ([#11422](https://github.com/crystal-lang/crystal/pull/11422), thanks @straight-shoota)
 
-## 1.2.1 (2021-10-21)
+## [1.2.1] - 2021-10-21
+[1.2.1]: https://github.com/crystal-lang/crystal/releases/1.2.1
 
 ### Compiler
 
@@ -1864,7 +1883,8 @@
 
 - Update markd subtree to v0.4.2 ([#11338](https://github.com/crystal-lang/crystal/pull/11338), thanks @straight-shoota)
 
-## 1.2.0 (2021-10-13)
+## [1.2.0] - 2021-10-13
+[1.2.0]: https://github.com/crystal-lang/crystal/releases/1.2.0
 
 ### Compiler
 
@@ -2082,7 +2102,8 @@
 - [CI] Update distribution-scripts ([#11285](https://github.com/crystal-lang/crystal/pull/11285), thanks @straight-shoota)
 - [CI] Remove i386 builds ([#11287](https://github.com/crystal-lang/crystal/pull/11287), thanks @straight-shoota)
 
-## 1.1.1 (2021-07-26)
+## [1.1.1] - 2021-07-26
+[1.1.1]: https://github.com/crystal-lang/crystal/releases/1.1.1
 
 ### Language changes
 - Revert name of top-level module to `main` ([#10993](https://github.com/crystal-lang/crystal/pull/10993), thanks @beta-ziliani)
@@ -2102,7 +2123,8 @@
 
 - Updating aarch64 actions to use 1.0.0 images ([#10976](https://github.com/crystal-lang/crystal/pull/10976), thanks @beta-ziliani)
 
-## 1.1.0 (2021-07-14)
+## [1.1.0] - 2021-07-14
+[1.1.0]: https://github.com/crystal-lang/crystal/releases/1.1.0
 
 ### Language changes
 
@@ -2323,7 +2345,8 @@
 - Update distribution-scripts for shards 0.15.0. ([#10862](https://github.com/crystal-lang/crystal/pull/10862), thanks @straight-shoota)
 - Add smoke tests for platforms where we don't run full tests ([#10848](https://github.com/crystal-lang/crystal/pull/10848), thanks @straight-shoota)
 
-## 1.0.0 (2021-03-22)
+## [1.0.0] - 2021-03-22
+[1.0.0]: https://github.com/crystal-lang/crystal/releases/1.0.0
 
 ### Language changes