typo

app/utils/index.js

@@ -3,7 +3,7 @@ function group_perms_by_model(permissions) {
   /*
     Groups an array of permissions objects by model.
 
-    `permissions` is an array of objects, each of which containas `content_type` attribute
+    `permissions` is an array of objects, each of which contains `content_type` attribute
     which in turn has a `model` attribute.
     Example:
       Input: [