Fixing default for excludedConfig (README.md)

Hi, I noticed the default value for `excludedConfig` was updated in 4d44e03

I also replaced double-quotes with single-quotes to match the lines above (e.g. line `413` is `excludedTypes: ['admin-role']`).

Author: liarco

README.md

@@ -423,7 +423,7 @@ Specify the names of configs you want to exclude from the syncing process. By de
 
 ###### Key: `excludedConfig`
 
-> `required:` NO | `type:` array | `default:` `["core-store.plugin_users-permissions_grant"]`
+> `required:` NO | `type:` array | `default:` `['core-store.plugin_users-permissions_grant', 'core-store.plugin_upload_metrics']`
 
 
 ## 🤝 Contributing