Add edit URL to Docs Pages

Author: Lagoja

docs/app/docusaurus.config.js

@@ -36,6 +36,7 @@ const config = {
                     sidebarPath: require.resolve('./sidebars.js'),
                     // Please change this to your repo.
                     // Remove this to remove the "edit this page" links.
+                    editUrl: "https://github.com/jetpack-io/devbox/tree/main/docs/app/"
                 },
                 // blog: {
                 //     showReadingTime: true,