add codeblock titles

Signed-off-by: Dasith Wijesiriwardena <dasiths@hotmail.com>

manifest.md

@@ -179,7 +179,8 @@ The design of the artifact depends on what content is being packaged with the ar
 The decision tree below MAY be used to structure your artifact:
 
 1. Does the artifact consist of at least one file or blob? If yes, continue to 2. If no, specify the `artifactType`, and set the `config` and `layers` to their empty descriptor values.
-    ```json
+
+    ```json,title=Artifact%20with%20annotations%20and%20artifactType%3Dapplication%2Fvnd.example%2Btype
     {
       "schemaVersion": 2,
       "mediaType": "application/vnd.oci.image.manifest.v1+json",
@@ -202,12 +203,14 @@ The decision tree below MAY be used to structure your artifact:
       }
     }
     ```
+
 2. Does the artifact have additional JSON formatted metadata as configuration? If yes, continue to 3. If no, specify the `artifactType`, include the artifact in the `layers`, and set `config` to the empty descriptor value.
-    ```json
+
+    ```json,title=Artifact%20with%20artifactType%3Dapplication%2Fvnd.example%2Btype%20and%20layers
     {
       "schemaVersion": 2,
       "mediaType": "application/vnd.oci.image.manifest.v1+json",
-      "artifactType": "application/vnd.example+type1",
+      "artifactType": "application/vnd.example+type",
       "config": {
         "mediaType": "application/vnd.oci.empty.v1+json",
         "digest": "sha256:44136fa355b3678a1146ad16f7e8649e94fb4fc21fe77e8310c060f61caaff8a",
@@ -220,10 +223,12 @@ The decision tree below MAY be used to structure your artifact:
           "size": 1234
         }
       ]
-    }
+    }    
     ```
+
 3. Does the artifact require a different `artifactType` from the `config.mediaType`, to support multiple configuration formats or versions for the same artifact tooling? If yes, continue to 4. If no, specify the `config` with the metadata, include the artifact in the `layers`, but do not set the `artifactType`.
-    ```json
+
+    ```json,title=Artifact%20with%20metadata%20config.mediaType%3Dapplication%2Fvnd.example%2Btype%20and%20layers
     {
       "schemaVersion": 2,
       "mediaType": "application/vnd.oci.image.manifest.v1+json",
@@ -241,13 +246,14 @@ The decision tree below MAY be used to structure your artifact:
       ]
     }
     ```
+
 4. Specify the `artifactType` to a common value for your artifact tooling, specify the `config` with the metadata for this artifact, and include the artifact in the `layers`.
 
-    ```json
+    ```json,title=Artifact%20with%20metadata%20artifactType%3Dapplication%2Fvnd.example%2Btype%20with%20config.mediaType%3Dapplication%2Fvnd.example.config.v1%2Bjson%20and%20layers
     {
       "schemaVersion": 2,
       "mediaType": "application/vnd.oci.image.manifest.v1+json",
-      "artifactType": "application/vnd.example+type1",
+      "artifactType": "application/vnd.example+type",
       "config": {
         "mediaType": "application/vnd.example.config.v1+json",
         "digest": "sha256:5891b5b522d5df086d0ff0b110fbd9d21bb4fc7163af34d08286a2e846f6be03",