📝 Update local-installation documentation for landing page (#1627)

This section of the local-installation documentation required to be
modified because the `/landing-page` directory has already been moved
from the `/apps` directory to the `/ee/apps` directory.


Thanks!

apps/docs/contribute/guides/local-installation.mdx

@@ -46,10 +46,8 @@ icon: 'laptop'
 
 6. (Optional) Start the landing page
 
-   Copy `apps/landing-page/.env.local.example` to `apps/landing-page/.env.local`
-
    ```sh
-   cd apps/landing-page
+   cd ee/apps/landing-page
    pnpm dev
    ```