update CI configuration

.editorconfig

@@ -8,3 +8,6 @@ insert_final_newline = true
 
 [*.json]
 indent_style = space
+
+[*.yml]
+indent_style = space

.github/workflows/ci.yml

@@ -20,11 +20,15 @@ jobs:
         # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
 
     steps:
-    - uses: actions/checkout@v2
-    - name: Use Node.js ${{ matrix.node-version }}
+    - name: Checkout
+      uses: actions/checkout@v2
+    - name: Setup Node.js ${{ matrix.node-version }}
       uses: actions/setup-node@v1
       with:
         node-version: ${{ matrix.node-version }}
-    - run: npm i
-    - run: npm run build
-    - run: npm run test
+    - name: Install
+      run: npm i
+    - name: Build
+      run: npm run build
+    - name: Test
+      run: npm run test