Fixed node version issue

Author: Vinod Kumar

.github/workflows/node.js.yml

@@ -12,7 +12,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v2
         with:
-          node-version: 16.14.x
+          node-version: 14.x
           cache: yarn
       - name: Build website
         run: |

package.json

@@ -9,8 +9,8 @@
     "deploy": "docusaurus deploy"
   },
   "dependencies": {
-    "@docusaurus/core": "^2.0.0-beta.21",
-    "@docusaurus/preset-classic": "^2.0.0-beta.21",
+    "@docusaurus/core": "^2.0.0-beta.20",
+    "@docusaurus/preset-classic": "^2.0.0-beta.20",
     "classnames": "^2.2.6",
     "react": "^16.8.4",
     "react-dom": "^16.8.4"