Expose correct path to group

:web_url will expose the full URL to the group making it unreachable on tests since the URL will not have the correct port on it.

app/serializers/group_entity.rb

@@ -5,11 +5,14 @@ class GroupEntity < Grape::Entity
   include GroupsHelper
 
   expose :id, :name, :path, :description, :visibility
-  expose :web_url
   expose :full_name, :full_path
   expose :parent_id
   expose :created_at, :updated_at
 
+  expose :web_url do |group|
+    group_path(group)
+  end
+
   expose :permissions do
     expose :human_group_access do |group, options|
       group.group_members.find_by(user_id: request.current_user)&.human_access