In the picture attached you can see the strange 'r' character next to the world Kills there. Probably just a typo in the code, happens to me all the time with my cat :)

This is actually not a "typo" it is because I try to break the name "Ender Dragon Kills" into to lines, trying to find the space, but the problem (bug) is that I didnt think about the colour codes. And I actually dont know how to solve the problem. ?

in this case the "r" is actually "&r" .... hmm....

I think you can fix this problem on this sign in your lang file. Changing

mobs.EnderDragon.name=§5Ender Dragon§r
to
mobs.EnderDragon.name=§5Ender Dragon

I also noticed that the color on line 3 is missing. I will see if I can fix that.

It works better now.