Shortened input method names for Armenian

Per @santhoshtr suggestion, I've shortened input method names for Armenian, as much as I could, and got rid of parenthesis in 2 out of 3 cases. I guess now it's more OK.

Armenian is a "long" language, so it's a common issue during l10n.
Shortening them further will significantly affect how recognizable/understandable names will be for average users.