Bug 27969: Change wording on returns page

To test:
1- go to /cgi-bin/koha/circ/returns.pl, click Checkin settings to show options
2- it says "Remember due date ..."
3- apply patch, reload
4- it says "Remember return date ..."

Signed-off-by: Kelly McElligott <kelly@bywatersolutions.com>

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>

koha-tmpl/intranet-tmpl/prog/en/modules/circ/returns.tt

@@ -798,7 +798,7 @@
                                                 [% ELSE %]
                                                     <input type="checkbox" id="return_date_override_remember" name="return_date_override_remember" />
                                                 [% END %]
-                                                <label for="return_date_override_remember"> Remember due date for next check in</label>
+                                                <label for="return_date_override_remember"> Remember return date for next check in</label>
                                             </div>
                                         </div> <!-- /.date-select -->
                                     [% END %]