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/packages/docs-ui/src/constants.tsx

@@ -37,19 +37,24 @@ export const navDropdownItems: NavigationItem[] = [
         link: "/v2/resources",
         useAsFallback: true,
       },
+      {
+        type: "link",
+        title: "Examples",
+        link: "/v2/resources/examples",
+      },
       {
         type: "link",
         title: "Recipes",
         link: "/v2/resources/recipes",
       },
+      {
+        type: "divider",
+      },
       {
         type: "link",
         title: "UI Library",
         link: "/ui",
       },
-      {
-        type: "divider",
-      },
       {
         type: "link",
         title: "Storefront Development",