docs: TSDoc + reference of fulfillment service (#5761)

www/apps/docs/content/references/services/classes/ClaimOrder.mdx

@@ -8,14 +8,14 @@ import ParameterTypes from "@site/src/components/ParameterTypes"
 
 A Claim represents a group of faulty or missing items. It consists of claim items that refer to items in the original order that should be replaced or refunded. It also includes details related to shipping and fulfillment.
 
-## Constructors
-
-#### constructor
+## constructor
 
 `**new ClaimOrder**()`
 
 A Claim represents a group of faulty or missing items. It consists of claim items that refer to items in the original order that should be replaced or refunded. It also includes details related to shipping and fulfillment.
 
+___
+
 ## Properties
 
 <ParameterTypes parameters={[
@@ -210,13 +210,15 @@ A Claim represents a group of faulty or missing items. It consists of claim item
   }
 ]} />
 
+___
+
 ## Methods
 
-#### beforeInsert
+### beforeInsert
 
 `Private **beforeInsert**(): void`
 
-##### Returns
+#### Returns
 
 `void`