try fix syntax workflow

.github/workflows/main.yml

@@ -96,12 +96,13 @@ jobs:
       options: --security-opt seccomp=unconfined
     steps:
       - name: Checkout repository
-      - uses: actions/checkout@v2
+        uses: actions/checkout@v2
       - name: Generate code coverage
-      - run: apt-get update
-      - run: apt install libwebkit2gtk-4.0-dev libappindicator3-dev libgtk-3-dev -y
-      - run: cargo +nightly tarpaulin --verbose --tests --all-features --workspace --timeout 120 --out Xml
+        run: |
+          apt-get update &&\
+          apt install libwebkit2gtk-4.0-dev libappindicator3-dev libgtk-3-dev -y &&\
+          cargo +nightly tarpaulin --verbose --tests --all-features --workspace --timeout 120 --out Xml
       - name: Upload to codecov.io
-      - uses: codecov/codecov-action@v2
+        uses: codecov/codecov-action@v2
         with:
           fail_ci_if_error: false