Fix GtkSettings docs typo
"left of right" should be "left or right". There's a small (subjective?) English nit in there as well: I believe that buttons are placed (for example) "on the right" rather than "at the right".
"left of right" should be "left or right". There's a small (subjective?) English nit in there as well: I believe that buttons are placed (for example) "on the right" rather than "at the right".