docs: localization with contentful guide (#12202)

www/apps/resources/sidebars/how-to-tutorials.mjs

@@ -92,6 +92,13 @@ While tutorials show you a specific use case, they also help you understand how
         description:
           "Learn how to implement a loyalty points system in your Medusa store.",
       },
+      {
+        type: "ref",
+        title: "Localization with Contentful",
+        path: "/integrations/guides/contentful",
+        description:
+          "Learn how to implement localization in Medusa by integrating Contentful.",
+      },
       {
         type: "ref",
         title: "Magento Migration",

www/apps/resources/sidebars/integrations.mjs

@@ -30,6 +30,11 @@ export const integrationsSidebar = [
     title: "CMS",
     initialOpen: true,
     children: [
+      {
+        type: "link",
+        path: "/integrations/guides/contentful",
+        title: "Contentful",
+      },
       {
         type: "link",
         path: "/integrations/guides/sanity",