Update firebase-hosting-merge.yml

Author: jkluge

.github/workflows/firebase-hosting-merge.yml

@@ -11,6 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+      - run: cd my-app/
       - run: npm ci && npm run build
       - uses: FirebaseExtended/action-hosting-deploy@v0
         with: