fix add APK

Author: Nicolass67

.github/workflows/flutter.yml

@@ -83,4 +83,4 @@ jobs:
         uses: actions/upload-artifact@v4
         with:
           name: release-apk
-          path: build/app/outputs/apk/release/app-release.apk
+          path: build/app/outputs/apk/release/app-release.apk