Added information for the command failing on Manjaro, resolving issue #94

[BodilessSleeper]

Resolves #94, can make a Manjaro specific section if that is preferred for this situation

[tannisroot]

This can be delivered to the user in a better way i think

[BodilessSleeper]

Yeah, I was thinking of maybe separating Manjaro into it's own entire section so you have Manjaro first and Arch/Arch derivatives below it but I was unsure if you're willing to do that