Update comments on custom date formats.

Author: dlglin

conf/localOverrides.conf.dist

@@ -273,10 +273,10 @@ $problemDefaults{max_attempts} = -1;
 
 # Uncomment the following line to customize the format of the dates displayed to
 # students.  As it is written, the line below will display open, due and answer
-# dates in the following format:
+# dates in the following format: Wed Jun 27 at 10:30am
 # For all available options, consult the documentation for perl DateTime under
 # "strftime patterns".
-#$studentDateDisplayFormat="%a %b %d at %l:%M%P";
+# $studentDateDisplayFormat="%a %b %d at %l:%M%P";
 
 
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