When `>docsearch` has no results, no reply message is created

Ideally it should say something, otherwise it looks like the bot didn't respond.


Example search with no results: `>docsearch grumbus`

<img width="638" height="340" alt="Image" src="https://github.com/user-attachments/assets/e6840d2c-1b0e-46c0-89da-e3b6c8d340f3" />