Patch #1521874: grammar errors in doanddont.tex.

Doc/howto/doanddont.tex

@@ -288,8 +288,9 @@ More useful functions in \module{os.path}: \function{basename},
 There are also many useful builtin functions people seem not to be
 aware of for some reason: \function{min()} and \function{max()} can
 find the minimum/maximum of any sequence with comparable semantics,
-for example, yet many people write they own max/min. Another highly
-useful function is \function{reduce()}. Classical use of \function{reduce()}
+for example, yet many people write they own
+\function{max()}/\function{min()}. Another highly useful function is
+\function{reduce()}. A classical use of \function{reduce()}
 is something like
 
 \begin{verbatim}