Update github instruction link in newbs_getting_started.md (qmk#12510)

Clarify that the link to the github/forking instructions is a link to how to fork this project. Previous wording implied that the link was to a how-to-use github in general page.

docs/newbs_getting_started.md

@@ -172,7 +172,7 @@ Once that completes, re-run `qmk setup` to complete the setup and checks.
 
 ?> The qmk home folder can be specified at setup with `qmk setup -H <path>`, and modified afterwards using the [cli configuration](cli_configuration.md?id=single-key-example) and the variable `user.qmk_home`. For all available options run `qmk setup --help`.
 
-?> If you already know [how to use GitHub](getting_started_github.md), we recommend that you create your own fork and use `qmk setup <github_username>/qmk_firmware` to clone your personal fork. If you don't know what that means you can safely ignore this message.
+?> If you already know how to use GitHub, [we recommend that you follow these instructions](getting_started_github.md) and use `qmk setup <github_username>/qmk_firmware` to clone your personal fork. If you don't know what that means you can safely ignore this message.
 
 ## 4. Test Your Build Environment