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/pricing/interfaces/CreatePricesDTO.mdx

@@ -22,7 +22,7 @@ The prices to create part of a price set.
   },
   {
     "name": "currency",
-    "type": "[`CreateCurrencyDTO`](CreateCurrencyDTO.mdx)",
+    "type": "[CreateCurrencyDTO](CreateCurrencyDTO.mdx)",
     "description": "The currency of this money amount.",
     "optional": true,
     "defaultValue": "",
@@ -104,7 +104,7 @@ The prices to create part of a price set.
   },
   {
     "name": "rules",
-    "type": "Record<`string`, `string`\\>",
+    "type": "`Record<string, string>`",
     "description": "The rules to add to the price. The object's keys are rule types' `rule_attribute` attribute, and values are the value of that rule associated with this price.",
     "optional": false,
     "defaultValue": "",