Fix typo, thanks Steven Malan!

Author: mine-cetinkaya-rundel

ch_regr_mult_and_log/TeX/ch_regr_mult_and_log.tex

@@ -1501,7 +1501,7 @@ \subsection{Options for improving the model fit}
 present in the updated model.
 If we choose to report this model, we would want to also
 discuss these shortcomings to be transparent in our work.
-Depending on what the model will be used, we could either
+Depending on what the model will be used for, we could either
 try to bring those under control, or we could stop since
 those issues aren't severe.
 Had the non-constant variance been a little more dramatic,