Fix syntax in Docker build workflow to correctly enable 'latest' version for tagged releases

Author: kalayciburak

.github/workflows/docker-build.yml

@@ -39,7 +39,7 @@ jobs:
             type=semver,pattern={{version}}
             type=semver,pattern={{major}}.{{minor}}
             type=raw,value=latest,enable={{is_default_branch}}
-            type=raw,value=latest,enable={{startsWith(github.ref, 'refs/tags/v')}}
+            type=raw,value=latest,enable=${{ startsWith(github.ref, 'refs/tags/v') }}
 
       - name: Build and push
         uses: docker/build-push-action@v6