Fix edit URL in documentation

Author: Julien Neuhart

docs/docusaurus.config.js

@@ -50,7 +50,7 @@ module.exports = {
           sidebarPath: require.resolve('./sidebars.js'),
           // Please change this to your repo.
           editUrl:
-            'https://github.com/thecodingmachine/symfony-boilerplate',
+            'https://github.com/thecodingmachine/symfony-boilerplate/docs',
         },
         theme: {
           customCss: require.resolve('./src/css/custom.css'),