Move frontend app to apps folder

Author: gianelli99

docs/repo-docs/reference/prune.mdx

@@ -179,16 +179,18 @@ Using the same example from above, running `turbo prune frontend --docker` will
   </Folder>
   <Folder name="json" defaultOpen>
     <File name="package.json (from repo root)" />
+    <Folder name="apps" defaultOpen>
+      <Folder name="frontend" defaultOpen>
+        <File name="package.json" />
+      </Folder>
+    </Folder>
     <Folder name="packages" defaultOpen>
       <Folder name="ui" defaultOpen>
         <File name="package.json" />
       </Folder>
       <Folder name="shared" defaultOpen>
         <File name="package.json" />
       </Folder>
-      <Folder name="frontend" defaultOpen>
-        <File name="package.json" />
-      </Folder>
     </Folder>
 
   </Folder>