2 quick doc patches looking for +1s or commits

Hi again everyone,

I've 2 tiny doc patches mostly involving grammar fixes (and errant whitespace elimination). My English is not perfect so any review would be very welcome.

The patches:

http://dev.rubyonrails.org/ticket/9819 http://dev.rubyonrails.org/ticket/10062

Thanks!

Cheers, Chu Yeow