message: docs: tweak docs for backstage.io/source-location
diff: @@ -92,12 +92,14 @@ view and edit links need changing.
  # Example:
  metadata:
  annotations:
  - backstage.io/source-location: github:https://github.com/my-org/my-service
  + backstage.io/source-location: url:https://github.com/my-org/my-service/
  ```
  A `Location` reference that points to the source code of the entity (typically a
  `Component`). Useful when catalog files do not get ingested from the source code
  -repository itself.
  +repository itself. If the URL points to a folder, it is important that it is
  +suffixed with a `'/'` in order for relative path resolution to work
  +consistently.
  ### jenkins.io/github-folder
  