Can't set shortcuts on Firefox

[roomedia]

Describe the bug
'Configure these shortcuts' also tries to open 'chrome://extensions/configureCommands' even on Firefox

To Reproduce
Steps to reproduce the behavior:

1. Go to 'Options'
2. Scroll down to 'Keyboard Shortcuts'
3. Click on 'Configure these shortcuts'
4. Copy link and check the url

Expected behavior
Open configureCommands page

Version (please complete the following information):

• OS: macOS Monterey v12.3.1
• Browser: Firefox 103.0.2 (64-bit)
• Version: v6.9.1

[ssorallen]

@roomedia In Firefox you can go to Tools > Add-ons and Themes > ⚙ > Manage Extension Shortcuts to manage shortcuts for all extensions you have installed. I will add a description and remove the link in Firefox because it does not appear possible to deeplink to that options page.