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

www/apps/docs/content/references/services/classes/AnalyticsConfig.mdx

@@ -12,7 +12,7 @@ Base abstract entity for all entities
 
 ### constructor
 
-**new AnalyticsConfig**()
+`**new AnalyticsConfig**()`
 
 ## Properties
 
@@ -86,7 +86,7 @@ Base abstract entity for all entities
 
 ### beforeInsert
 
-`Private` **beforeInsert**(): `void`
+`Private **beforeInsert**(): void`
 
 #### Returns