message: TechDocs: Update docs to use URL Reader over dir preparer
diff: @@ -66,7 +66,9 @@ Update your component's entity description by adding the following lines to its
  ```yaml
  metadata:
  annotations:
  - backstage.io/techdocs-ref: dir:./
  + backstage.io/techdocs-ref: url:https://github.com/org/repo
  + # Or
  + # backstage.io/techdocs-ref: url:https://github.com/org/repo/tree/branchName/subFolder
  ```
  Create a `/docs` folder in the root of the project with at least an `index.md`
  