docs: change config snippets to use defineConfig (#7546)

www/apps/resources/app/architectural-modules/cache/create/page.mdx

@@ -152,14 +152,20 @@ To use your Cache Module, add it to the `modules` object exported as part of the
 For example:
 
 ```js title="medusa-config.js"
-const modules = {
-  // other modules...
-  cacheService: {
-    resolve: "./dist/modules/my-cache/index.ts",
-    options: {
-      // any necessary options
-      ttl: 30,
+const { Modules } = require("@medusajs/modules-sdk")
+
+// ...
+
+module.exports = defineConfig({
+  // ...
+  modules: {
+    [Modules.CACHE]: {
+      resolve: "./modules/my-cache",
+      options: {
+        // any options
+        ttl: 30,
+      },
     },
-  },
-}
+  }
+})
 ```

www/apps/resources/app/architectural-modules/cache/in-memory/page.mdx

@@ -16,6 +16,12 @@ For production, it’s recommended to use modules like [Redis Cache Module](../r
 
 ## Install the In-Memory Cache Module
 
+<Note>
+
+The In-Memory Cache Module is installed by default in your application.
+
+</Note>
+
 To install the In-Memory Cache Module, run the following command in the directory of your Medusa application:
 
 ```bash npm2yarn
@@ -29,18 +35,17 @@ const { Modules } = require("@medusajs/modules-sdk")
 
 // ...
 
-module.exports = {
+module.exports = defineConfig({
   // ...
   modules: {
-    // ...
     [Modules.CACHE]: {
       resolve: "@medusajs/cache-inmemory",
       options: {
         // optional options
       },
     },
-  },
-}
+  }
+})
 ```
 
 ### In-Memory Cache Module Options

www/apps/resources/app/architectural-modules/cache/redis/page.mdx

@@ -27,7 +27,7 @@ npm install @medusajs/cache-redis
 Next, add the module into the `modules` property of the exported object in `medusa-config.js`:
 
 export const highlights = [
-  ["12", "redisUrl", "The Redis connection URL."]
+  ["11", "redisUrl", "The Redis connection URL."]
 ]
 
 ```js title="medusa-config.js" highlights={highlights}
@@ -35,18 +35,17 @@ const { Modules } = require("@medusajs/modules-sdk")
 
 // ...
 
-module.exports = {
+module.exports = defineConfig({
   // ...
   modules: {
-    // ...
     [Modules.CACHE]: {
       resolve: "@medusajs/cache-redis",
       options: { 
         redisUrl: process.env.CACHE_REDIS_URL,
       },
     },
-  },
-}
+  }
+})
 ```
 
 ### Environment Variables