Mob Statistics Changed Grammar (English)

This one is very simple and doesn't make much of an impact at all but I thought I'd suggest it anyway, using the English language in the Minecraft mob statistics, it says, "You killed # [Mob]", and "You have never been killed by [Mob]", I think these should be changed to "You've/You have killed # [Mob]", "You have never been killed by a [Mob]", the second one will still be kind of messed up when using mobs such as the ender dragon because for proper English it'd be necessary to use an, however it'd still be an improvement.