message: create-app: update changelog to put more emphasis on plugin-catalog-react migration
diff: ### Patch Changes
  -- 019fe39a0: `@backstage/plugin-catalog` stopped exporting hooks and helpers for other
  - plugins. They are migrated to `@backstage/plugin-catalog-react`.
  - Change both your dependencies and imports to the new package.
  +- 019fe39a0: **BREAKING CHANGE**: The `useEntity` hooks has been moved from `@backstage/plugin-catalog` to `@backstage/plugin-catalog-react`.
  + To apply this change to an existing app, add `@backstage/plugin-catalog-react` to your dependencies in `packages/app/package.json`, and update
  + the import inside `packages/app/src/components/catalog/EntityPage.tsx` as well as any other places you were using `useEntity` or any other functions that were moved to `@backstage/plugin-catalog-react`.
  - 436ca3f62: Remove techdocs.requestUrl and techdocs.storageUrl from app-config.yaml
  - Updated dependencies [ceef4dd89]
  - Updated dependencies [720149854]
  