Update meilisearch.md (#7862)

Problem:

The existing documentation for the Meilisearch plugin contains example that, if copy-pasted exactly, will not work.

Solution:

I have updated the Meilisearch plugin configuration example to reflect the correct settings. 

Benefits:

With this updated code snippet, users can simply copy and paste it into their local medusa-config.js file. It will work seamlessly with the standard configuration and is compatible with the latest version of Meilisearch.

Testing:

The updated configuration has been tested and confirmed to work in a live deployment environment on Digital Ocean(Server) and Vercel(Storefront)


<img width="999" alt="image" src="https://github.com/medusajs/medusa/assets/130260096/a277e14e-246c-4307-90d2-10880d2bc913">

<img width="1434" alt="image" src="https://github.com/medusajs/medusa/assets/130260096/4063b53f-3589-47a8-a300-a0d4a19201a2">

www/apps/docs/content/plugins/search/meilisearch.md

@@ -127,25 +127,32 @@ const plugins = [
   {
     resolve: `medusa-plugin-meilisearch`,
     options: {
-      // other options...
+      config: {
+        host: process.env.MEILISEARCH_HOST,
+        apiKey: process.env.MEILISEARCH_API_KEY,
+      },
       settings: {
         products: {
           indexSettings: {
-            searchableAttributes: [
-              "title", 
+            searchableAttributes: ["title", "description", "variant_sku"],
+            displayedAttributes: [
+              "title",
               "description",
               "variant_sku",
-            ],
-            displayedAttributes: [
-              "id", 
-              "title", 
-              "description", 
-              "variant_sku", 
-              "thumbnail", 
+              "thumbnail",
               "handle",
             ],
           },
           primaryKey: "id",
+          transformer: (product) => ({
+            id: product.id,
+            title: product.title,
+            description: product.description,
+            variant_sku: product.variant_sku,
+            thumbnail: product.thumbnail,
+            handle: product.handle,
+            // include other attributes as needed
+          }),
         },
       },
     },