Corrected two typos

"don't" with &apos; should be more correct than &rsquot; (or is it better to escape it \' ?)

I personally find the line 

/* translators: %1$s: smiley */ 

pretty confusing, but at least it should be singular (not smilies)

(I'm not sure if I should have posted this under "Issues". I actually just started learning git to contribute to this project, so please excuse my ignorance.)