docs: update docusaurus to v3 (#5625)

* update dependencies

* update onboarding mdx

* fixes for mdx issues

* fixes for mdx compatibility

* resolve mdx errors

* fixes in reference

* fix check errors

* revert change in vale action

* fix node version in action

* fix summary in markdown

.github/workflows/docs-test.yml

@@ -22,7 +22,7 @@ jobs:
       - name: Setup Node.js environment
         uses: actions/setup-node@v3
         with:
-          node-version: "16.14.0"
+          node-version: "18"
           cache: "yarn"
 
       - name: Install dependencies