[BUG]: Highlight shortcut and Howto shortcut overlap

[BaccanoMob]

Describe the bug

When I was testing the shortcuts for markdown I found Ctrl + Shift + H is overlapping. This makes changes pages without saving the notes.

Steps to Reproduce

1. Create a new note
2. Type something
3. Select text and press the magic keys
4. You can see for a split second the text is highlighted but you will end up at howto pages.
5. When you go back, you will see the note was not saved.

How do you run Jotty?

Docker

Jotty Version

1.17.1

Checklist

• I have searched across other issues to make sure this bug has not been already reported.

[BaccanoMob]

Mentioned in among other shortcuts in #330 (comment) feedback but this was the only bug I found.

[fccview]

Oh damn this is super valid, the shortcut used to open the modal, it now redirects to the page!

I'll jump on it!