chore(deploy.yml): update config

Author: sunss

.github/workflows/deploy.yml

@@ -13,9 +13,7 @@ jobs:
       - uses: actions/checkout@v2
 
       - name: build
-        run: |
-          npm install
-          npm run build
+      - run: npm install && npm run build
 
       - name: Deploy
         uses: peaceiris/actions-gh-pages@v3