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

www/apps/docs/content/references/js-client/classes/AdminCustomersResource.mdx

@@ -18,11 +18,11 @@ Related Guide: [How to manage customers](https://docs.medusajs.com/modules/custo
 
 ## Methods
 
-#### create
+### create
 
 Create a customer as an admin.
 
-##### Example
+#### Example
 
 ```ts
 import Medusa from "@medusajs/medusa-js"
@@ -40,7 +40,7 @@ medusa.admin.customers
   })
 ```
 
-##### Parameters
+#### Parameters
 
 <ParameterTypes parameters={[
   {
@@ -118,7 +118,7 @@ medusa.admin.customers
   }
 ]} />
 
-##### Returns
+#### Returns
 
 <ParameterTypes parameters={[
   {
@@ -290,11 +290,11 @@ medusa.admin.customers
 
 ___
 
-#### list
+### list
 
 Retrieve a list of Customers. The customers can be filtered by fields such as `q` or `groups`. The customers can also be paginated.
 
-##### Example
+#### Example
 
 To list customers:
 
@@ -339,7 +339,7 @@ medusa.admin.customers
   })
 ```
 
-##### Parameters
+#### Parameters
 
 <ParameterTypes parameters={[
   {
@@ -417,7 +417,7 @@ medusa.admin.customers
   }
 ]} />
 
-##### Returns
+#### Returns
 
 <ParameterTypes parameters={[
   {
@@ -616,11 +616,11 @@ medusa.admin.customers
 
 ___
 
-#### retrieve
+### retrieve
 
 Retrieve the details of a customer.
 
-##### Example
+#### Example
 
 ```ts
 import Medusa from "@medusajs/medusa-js"
@@ -631,7 +631,7 @@ medusa.admin.customers.retrieve(customerId).then(({ customer }) => {
 })
 ```
 
-##### Parameters
+#### Parameters
 
 <ParameterTypes parameters={[
   {
@@ -654,7 +654,7 @@ medusa.admin.customers.retrieve(customerId).then(({ customer }) => {
   }
 ]} />
 
-##### Returns
+#### Returns
 
 <ParameterTypes parameters={[
   {
@@ -826,11 +826,11 @@ medusa.admin.customers.retrieve(customerId).then(({ customer }) => {
 
 ___
 
-#### update
+### update
 
 Update a customer's details.
 
-##### Example
+#### Example
 
 ```ts
 import Medusa from "@medusajs/medusa-js"
@@ -845,7 +845,7 @@ medusa.admin.customers
   })
 ```
 
-##### Parameters
+#### Parameters
 
 <ParameterTypes parameters={[
   {
@@ -951,7 +951,7 @@ medusa.admin.customers
   }
 ]} />
 
-##### Returns
+#### Returns
 
 <ParameterTypes parameters={[
   {