Fix Unicode character name

Author: dmc00

doc/Language/setbagmix.pod6

@@ -79,8 +79,8 @@ one C<Set> is a subset of another C<Set>.
 
 These infixes can be written using the UTF-8 character that represents the
 function (like L<∈|/routine/∈>, or L<∪|/routine/∪>), or they can be written with an
-equivalent ASCII version (like L<(elem)|/routine/(elem)> or L<(E<VERTICAL
-LINE>)|/routine/(|)>).
+equivalent ASCII version (like L<(elem)|/routine/(elem)> or
+L<(E<VERTICAL LINE>)|/routine/(|)>).
 
 Most of the time, explicitly using C<Set> objects with these infixes is
 unnecessary. All of the infix operators will work on any objects of type