Mention JavaDoc PR in prepare-release-workflow

Author: newtork

.github/workflows/prepare-release.yaml

@@ -283,6 +283,7 @@ jobs:
           PR_URL=$(gh pr create --title "Release ${{ needs.bump-version.outputs.release-version }}" --body "## TODOs
           - [ ] Review the changes in [the release commit]($COMMIT_URL)
           - [ ] Review **and approve** the [Release Notes PR](${{ needs.create-release-notes-pr.outputs.pr-url }})
+          - [ ] Review **and approve** the [JavaDoc PR](https://github.com/SAP/cloud-sdk/pulls?q=is%3Aopen+is%3Apr+author%3Abot-sdk-js+Update+JavaDocs)
           - [ ] Review the [Draft Release](${{ needs.create-release.outputs.release-url }})
           - [ ] Review **and approve** this PR
           - [ ] Once all tests of this PR are green, trigger the [Perform Release Workflow](${{ github.event.repository.html_url }}/actions/workflows/perform-release.yml)