docs: update middlewares to use defineMiddlewares (#8283)

www/apps/resources/app/commerce-modules/auth/auth-identity-and-actor-types/page.mdx

@@ -27,13 +27,16 @@ When you protect routes with the `authenticate` middleware, you specify in its f
 For example:
 
 export const highlights = [
-  ["8", `"user"`, "The actor type that must be authenticated to access the specified routes."]
+  ["11", `"user"`, "The actor type that must be authenticated to access the specified routes."]
 ]
 
 ```ts title="src/api/middlewares.ts" highlights={highlights}
-import { MiddlewaresConfig, authenticate } from "@medusajs/medusa"
+import { 
+  defineMiddlewares,
+  authenticate
+} from "@medusajs/medusa"
 
-export const config: MiddlewaresConfig = {
+export default defineMiddlewares({
   routes: [
     {
       matcher: "/custom/admin*",
@@ -42,7 +45,7 @@ export const config: MiddlewaresConfig = {
       ],
     },
   ],
-}
+})
 ```
 
 By specifying `user` as the first parameter of `authenticate`, only authenticated users of actor type `user` can access API routes starting with `/custom/admin`.

www/apps/resources/app/commerce-modules/auth/create-actor-type/page.mdx

@@ -176,15 +176,18 @@ The last step is to apply the `authenticate` middleware on the API routes that r
 To do that, create the file `src/api/middlewares.ts` with the following content:
 
 export const middlewareHighlights = [
-  ["9", "authenticate", "Require the user to be authenticated to access the `/manager` API route when sending a `POST` request."],
-  ["10", "allowUnregistered", "The user doesn't need to be registered to access the API route."],
-  ["17", "authenticate", "Require the user to be authenticated as a manager when accessing `/manager/me` API routes."]
+  ["12", "authenticate", "Require the user to be authenticated to access the `/manager` API route when sending a `POST` request."],
+  ["13", "allowUnregistered", "The user doesn't need to be registered to access the API route."],
+  ["20", "authenticate", "Require the user to be authenticated as a manager when accessing `/manager/me` API routes."]
 ]
 
 ```ts title="src/api/middlewares.ts" highlights={middlewareHighlights}
-import { MiddlewaresConfig, authenticate } from "@medusajs/medusa"
+import { 
+  defineMiddlewares,
+  authenticate
+} from "@medusajs/medusa"
 
-export const config: MiddlewaresConfig = {
+export default defineMiddlewares({
   routes: [
     {
       matcher: "/manager",
@@ -202,7 +205,7 @@ export const config: MiddlewaresConfig = {
       ],
     },
   ],
-}
+})
 ```
 
 This applies middlewares on two route patterns: