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/GiftCardTransaction.mdx

@@ -12,7 +12,7 @@ Gift Card Transactions are created once a Customer uses a Gift Card to pay for t
 
 ### constructor
 
-**new GiftCardTransaction**()
+`**new GiftCardTransaction**()`
 
 Gift Card Transactions are created once a Customer uses a Gift Card to pay for their Order.
 
@@ -39,7 +39,7 @@ Gift Card Transactions are created once a Customer uses a Gift Card to pay for t
   },
   {
     "name": "gift_card",
-    "type": "[`GiftCard`](GiftCard.mdx)",
+    "type": "[GiftCard](GiftCard.mdx)",
     "description": "The details of the gift card associated used in this transaction.",
     "optional": false,
     "defaultValue": "",
@@ -75,7 +75,7 @@ Gift Card Transactions are created once a Customer uses a Gift Card to pay for t
   },
   {
     "name": "order",
-    "type": "[`Order`](Order.mdx)",
+    "type": "[Order](Order.mdx)",
     "description": "The details of the order that the gift card was used for payment.",
     "optional": false,
     "defaultValue": "",
@@ -106,7 +106,7 @@ Gift Card Transactions are created once a Customer uses a Gift Card to pay for t
 
 ### beforeInsert
 
-`Private` **beforeInsert**(): `void`
+`Private **beforeInsert**(): void`
 
 #### Returns