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/AddressPayload.mdx

@@ -12,7 +12,7 @@ Address fields used when creating/updating an address.
 
 ### constructor
 
-**new AddressPayload**()
+`**new AddressPayload**()`
 
 Address fields used when creating/updating an address.
 
@@ -84,7 +84,7 @@ Address fields used when creating/updating an address.
   },
   {
     "name": "metadata",
-    "type": "Record<`string`, `unknown`\\>",
+    "type": "`Record<string, unknown>`",
     "description": "An optional key-value map with additional details",
     "optional": true,
     "defaultValue": "",