add comments to changes

Provider/Keycloak.php

@@ -147,6 +147,7 @@ public function getClientSecret()
 
     protected function getDefaultScopes(): array
     {
+        //These paramaters are sent as 1 element of the array instead of multiple to avoid problems with the getSeparatorFunction in the league/oauth2-client library separating the scopes by a comma.
         return ['openid email'];
     }