bug#10844: 24.0.93; Slightly unclear help text about remapped commands

[Drew Adams]

> > kill-buffer is an interactive built-in function in `C source code'.
> > It is remapped to `ido-kill-buffer', which is bound to C-x k.
> 
> Indeed, it's a bit confusing.  I'm thinking of something 
> along the lines of:
>    It is normally bound to C-x k,
>    tho the command is remapped to `ido-kill-buffer'.
> 
> but I'm not satisfied yet.  Can someone help out find a wording that's
> sufficiently concise for those who know what's going on without being
> confusing for those who don't?

What is wrong with "Its keys are remapped to..." (instead of "It is remapped
to...")?  Seems concise and clear, to me.