[SG-29637] - Show OS specific keys in keyboard shortcuts

Created by: gitstart-sourcegraph

Problem statement

1. Go to https://sourcegraph.com/search
2. Using Shift + ? to open keyboard shortcuts.
3. See that the Meta key is used in keyboard shortcuts.

Refs

Sourcegraph issue Gitstart ticket

Success Criteria

Keyboard shortcuts on Windows should never use the Meta/Windows key as this is only for global OS shortcuts. We should use Cmd (⌘) on Mac and Ctrl on Windows and Linux and show that appropriately based on the OS.

Screenshots

Windows / Linux

Mac Os