update dependencies

Author: JeremyDolle

documentation/package.json

@@ -13,8 +13,8 @@
     "write-heading-ids": "docusaurus write-heading-ids"
   },
   "dependencies": {
-    "@docusaurus/core": "2.0.0-beta.6",
-    "@docusaurus/preset-classic": "2.0.0-beta.6",
+    "@docusaurus/core": "2.0.0-beta.14",
+    "@docusaurus/preset-classic": "2.0.0-beta.14",
     "@mdx-js/react": "^1.6.21",
     "clsx": "^1.1.1",
     "react": "^17.0.1",