* update axe.yml

Author: khiga8

.github/workflows/axe.yml

@@ -11,16 +11,13 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - name: Use Node.js 12.x
+      - name: Use Node.js
         uses: actions/setup-node@v1
         with:
-          node-version: 12.x
-      - run: cd docs
-      - run: yarn install
-      - run: yarn develop & npx wait-on http://localhost:8000
+          node-version: 14
+      - run: npm run dev & npx wait-on --timeout 5000 http://localhost:8000
       - name: Run axe
-        run: |
-          script/axe-docs
+        run: script/axe-docs
       - name: Upload @axe-core/cli check results
         uses: actions/upload-artifact@master
         with: