Update docker-image.yml

Author: anujdevopslearn

.github/workflows/docker-image.yml

@@ -28,7 +28,7 @@ jobs:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
     - name: Build and push
-      if: github.ref_name == "master"
+      if: github.ref_name == 'master'
       uses: docker/build-push-action@v5
       with:
         context: .