make sure both api reqs are on the right branch

Author: CoderDake

.github/workflows/release-notes.yaml

@@ -23,7 +23,7 @@ jobs:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           PULL_NUMBER: ${{steps.get-pull-request-number.outputs.PULL_REQUEST_NUMBER}}
         run: |
-          FILES_RESPONSE=$(gh api /repos/flutter/devtools/pulls/$PULL_NUMBER/files)
+          FILES_RESPONSE=$(gh api /repos/$GITHUB_REPOSITORY/pulls/$PULL_NUMBER/files)
           echo "FILES_RESPONSE: $FILES_RESPONSE"
           
           HAS_CHANGED_RELEASE_NOTES=$(echo $FILES_RESPONSE | jq '.[].filename' | jq -s '. | any(. == env.CURRENT_RELEASE_JSON_FILE_PATH)')