[update] doc engine to v2.3.1

Author: serhiipylypchuk1991

package.json

@@ -11,8 +11,8 @@
     "serve": "docusaurus serve"
   },
   "dependencies": {
-    "@docusaurus/core": "^2.2.0",
-    "@docusaurus/preset-classic": "^2.2.0",
+    "@docusaurus/core": "^2.3.1",
+    "@docusaurus/preset-classic": "^2.3.1",
     "@mdx-js/react": "^1.5.8",
     "clsx": "^1.1.1",
     "docusaurus-gtm-plugin": "^0.0.2",