Fix typo in comment

[SamGuay]

I fixed the misleading typo in 'foucsed', which should read 'focused' in the config section.

  // If you set this to 'foucsed', we will only capture keyboard events
  // for embdedded decks when they are in focus
  keyboardCondition: null,

In the CONTRIBUTING.md, it says to PR on dev, but happy to PR on master If preferred :).

[MJjames43]

#2923

[hakimel]

Thanks. This was fixed in another PR