Merge pull request #173 in ASAPO/asapo from docs to develop

* commit 'b7bbd656':
  Update docusaurus version to 2.0.0-beta.6

docs/site/package.json

@@ -14,8 +14,8 @@
     "write-heading-ids": "docusaurus write-heading-ids"
   },
   "dependencies": {
-    "@docusaurus/core": "2.0.0-alpha.72",
-    "@docusaurus/preset-classic": "2.0.0-alpha.72",
+    "@docusaurus/core": "2.0.0-beta.6",
+    "@docusaurus/preset-classic": "2.0.0-beta.6",
     "@mdx-js/react": "^1.6.21",
     "clsx": "^1.1.1",
     "raw-loader": "^4.0.2",