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/PriceSetDTO.mdx

@@ -22,7 +22,7 @@ A price set's data.
   },
   {
     "name": "money_amounts",
-    "type": "[`MoneyAmountDTO`](MoneyAmountDTO.mdx)[]",
+    "type": "[MoneyAmountDTO](MoneyAmountDTO.mdx)[]",
     "description": "The prices that belong to this price set.",
     "optional": true,
     "defaultValue": "",
@@ -39,7 +39,7 @@ A price set's data.
       },
       {
         "name": "currency",
-        "type": "[`CurrencyDTO`](CurrencyDTO.mdx)",
+        "type": "[CurrencyDTO](CurrencyDTO.mdx)",
         "description": "The money amount's currency. Since this is a relation, it will only be retrieved if it's passed to the `relations` array of the find-configuration options.",
         "optional": true,
         "defaultValue": "",
@@ -123,7 +123,7 @@ A price set's data.
   },
   {
     "name": "rule_types",
-    "type": "[`RuleTypeDTO`](RuleTypeDTO.mdx)[]",
+    "type": "[RuleTypeDTO](RuleTypeDTO.mdx)[]",
     "description": "The rule types applied on this price set.",
     "optional": true,
     "defaultValue": "",
@@ -159,7 +159,7 @@ A price set's data.
       {
         "name": "rule_attribute",
         "type": "`string`",
-        "description": "The unique name used to later identify the rule_attribute. For example, it can be used in the `context` parameter of the `calculatePrices` method to specify a rule for calculating the price.",
+        "description": "The unique name used to later identify the rule\\_attribute. For example, it can be used in the `context` parameter of the `calculatePrices` method to specify a rule for calculating the price.",
         "optional": false,
         "defaultValue": "",
         "expandable": false,