Fix yaml indent (#59)

.github/workflows/workflow.yml

@@ -16,23 +16,23 @@ jobs:
       matrix:
         operating-system: [ubuntu-latest, windows-latest]
     steps:
-    - name: Checkout
-      uses: actions/checkout@v2
+      - name: Checkout
+        uses: actions/checkout@v2
 
-    - name: Setup node 12
-      uses: actions/setup-node@v1
-      with:
-        node-version: 12
+      - name: Setup node 12
+        uses: actions/setup-node@v1
+        with:
+          node-version: 12
 
-    - name: npm install
-      run: npm install
+      - name: npm install
+        run: npm install
 
-    - name: Lint
-      run: npm run format-check
+      - name: Lint
+        run: npm run format-check
 
-    - name: npm test
-      run: npm test
+      - name: npm test
+        run: npm test
 
-    - name: audit packages
-      run: npm audit --audit-level=high
-      if: matrix.operating-system == 'ubuntu-latest'
+      - name: audit packages
+        run: npm audit --audit-level=high
+        if: matrix.operating-system == 'ubuntu-latest'