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/ShippingOptionRequirement.mdx

@@ -12,7 +12,7 @@ A shipping option requirement defines conditions that a Cart must satisfy for th
 
 ### constructor
 
-**new ShippingOptionRequirement**()
+`**new ShippingOptionRequirement**()`
 
 A shipping option requirement defines conditions that a Cart must satisfy for the Shipping Option to be available for usage in the Cart.
 
@@ -48,7 +48,7 @@ A shipping option requirement defines conditions that a Cart must satisfy for th
   },
   {
     "name": "shipping_option",
-    "type": "[`ShippingOption`](ShippingOption.mdx)",
+    "type": "[ShippingOption](ShippingOption.mdx)",
     "description": "The details of the shipping option that the requirements belong to.",
     "optional": false,
     "defaultValue": "",
@@ -66,8 +66,8 @@ A shipping option requirement defines conditions that a Cart must satisfy for th
   },
   {
     "name": "type",
-    "type": "[`RequirementType`](../enums/RequirementType.mdx)",
-    "description": "The type of the requirement, this defines how the value will be compared to the Cart's total. `min_subtotal` requirements define the minimum subtotal that is needed for the Shipping Option to be available, while the `max_subtotal` defines the maximum subtotal that the Cart can have for the Shipping Option to be available.",
+    "type": "[RequirementType](../enums/RequirementType.mdx)",
+    "description": "The type of the requirement, this defines how the value will be compared to the Cart's total. `min\\_subtotal` requirements define the minimum subtotal that is needed for the Shipping Option to be available, while the `max\\_subtotal` defines the maximum subtotal that the Cart can have for the Shipping Option to be available.",
     "optional": false,
     "defaultValue": "",
     "expandable": false,
@@ -79,7 +79,7 @@ A shipping option requirement defines conditions that a Cart must satisfy for th
 
 ### beforeInsert
 
-`Private` **beforeInsert**(): `void`
+`Private **beforeInsert**(): void`
 
 #### Returns