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/entities/classes/IdempotencyKey.mdx

@@ -67,7 +67,7 @@ Idempotency Key is used to continue a process in case of any failure that might
   },
   {
     "name": "request_params",
-    "type": "Record<`string`, `unknown`\\>",
+    "type": "`Record<string, unknown>`",
     "description": "The parameters passed to the request",
     "optional": false,
     "defaultValue": "",
@@ -85,7 +85,7 @@ Idempotency Key is used to continue a process in case of any failure that might
   },
   {
     "name": "response_body",
-    "type": "Record<`string`, `unknown`\\>",
+    "type": "`Record<string, unknown>`",
     "description": "The response's body",
     "optional": false,
     "defaultValue": "",