fix pipeline

Author: devtronic

.github/workflows/flutter.yml

@@ -22,9 +22,7 @@ jobs:
       - name: Install dependencies
         run: dart pub get
       - name: Override dependencies
-        run: 'echo "dependency_overrides:\n\tdart_style: ^2.0.1" > pubspec_overrides.yaml && cp pubspec_overrides.yaml example/'
-
-
+        run: echo "dependency_overrides:\n\tdart_style: ^2.0.1\" > pubspec_overrides.yaml && cp pubspec_overrides.yaml example/"
       - name: Verify formatting
         run: dart format --output=none --set-exit-if-changed lib