Merge branch 'docs/fix-commit-api-render' into 'master'

Fix code block not rendering

See merge request gitlab-org/gitlab-ce!27153

doc/api/commits.md

@@ -130,6 +130,7 @@ curl --request POST --header "PRIVATE-TOKEN: <your_access_token>" --header "Cont
 ```
 
 Example response:
+
 ```json
 {
   "id": "ed899a2f4b50b4370feeea94676502b42383c746",