fix comment

apps/app/src/features/openai/server/routes/edit/index.ts

@@ -96,7 +96,7 @@ export const postMessageToEditHandlersFactory: PostMessageHandlersFactory = (cro
         return res.apiv3Err(new ErrorV3('GROWI AI is not enabled'), 501);
       }
 
-      // AiAssistant check
+      // Check if usable
       if (aiAssistantId != null) {
         const isAiAssistantUsable = await openaiService.isAiAssistantUsable(aiAssistantId, req.user);
         if (!isAiAssistantUsable) {