Hotkeys are triggered within the ninja-keys search input

Hello!

First of all thank you for such a nice library. I'm facing the following issue, steps to reproduce:

- Register a hotkey with single letter, like "c"
- If you search within ninja-keys and use the letter "c", it's triggering the hotkey which in my case redirects to another page

Relevant details
- Using the hotkeys in any other input or textarea doesn't trigger handler

Thank you!