Update build.yml (#17)

Author: hoc081098

.github/workflows/build.yml

@@ -20,6 +20,9 @@ jobs:
 
     - name: Make gradlew executable
       run: chmod +x ./gradlew
+      
+    - name: Spotless check
+      run: ./gradlew spotlessCheck
 
     - name: Build debug APK
       run: ./gradlew assembleDebug --warning-mode all --stacktrace