docs: added examples page (#9587)

- Added an examples page with examples of all different concepts in Medusa. We'll probably add more examples with time as we see the need for them.
- Small fixes in different pages.

Preview: https://resources-docs-ocb5uyp0o-medusajs.vercel.app/v2/resources/examples

www/apps/book/next.config.mjs

@@ -167,13 +167,18 @@ const nextConfig = {
       {
         source: "/basics/modules-and-services",
         destination: "/basics/modules",
-        permanent: true
+        permanent: true,
       },
       {
         source: "/basics/data-models",
         destination: "/basics/modules",
-        permanent: true
-      }
+        permanent: true,
+      },
+      {
+        source: "/more-resources/examples",
+        destination: "/resources/examples",
+        permanent: true,
+      },
     ]
   },
 }