fix error

app/controllers/admin/site_panel_controller.rb

@@ -135,7 +135,7 @@ class Admin::SitePanelController < OrbitAdminController
     end
   end
   def create
-    server_abiliy = ServerAbility.first
+    server_ability = ServerAbility.first
     if server_ability.available
       site_construct = SiteConstruct.new(site_construct_params)
       site_construct.user_id = current_user.id.to_s