chore: upgrade to docusaurus to 2.3.1

Author: jscottsmith

documentation/package.json

@@ -14,9 +14,9 @@
     "write-heading-ids": "docusaurus write-heading-ids"
   },
   "dependencies": {
-    "@docusaurus/core": "2.0.1",
-    "@docusaurus/plugin-google-analytics": "^2.0.1",
-    "@docusaurus/preset-classic": "2.0.1",
+    "@docusaurus/core": "2.3.1",
+    "@docusaurus/plugin-google-analytics": "2.3.1",
+    "@docusaurus/preset-classic": "2.3.1",
     "@mdx-js/react": "^1.6.21",
     "classnames": "^2.3.1",
     "clsx": "^1.1.1",