fixed yaml

Author: jruaux

.github/workflows/gradle.yml

@@ -26,7 +26,7 @@ jobs:
     - name: Build with Gradle
       run: ./gradlew build
       env:
-        - GITHUB_USERNAME: jruaux
+        GITHUB_USERNAME: jruaux
     - name: Upload coverage to Codecov
       uses: codecov/codecov-action@v1
       with: