Revert Docusaurus version

Author: oojacoboo

website/package.json

@@ -9,8 +9,8 @@
   "devDependencies": {
   },
   "dependencies": {
-    "@docusaurus/core": "2.0.0-beta.14",
-    "@docusaurus/preset-classic": "2.0.0-beta.14",
+    "@docusaurus/core": "2.0.0-beta.8",
+    "@docusaurus/preset-classic": "2.0.0-beta.8",
     "clsx": "^1.1.1",
     "mdx-mermaid": "^1.1.0",
     "mermaid": "^8.12.0",