Bug 29270: start_for is actually date_to

The attribute has been renamed in the meanwhile..

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

koha-tmpl/intranet-tmpl/prog/en/modules/reserve/request.tt

@@ -518,7 +518,7 @@
                             [% IF ( reserve_in_future ) %]
                                 <li>
                                     <label for="from">Hold starts on date:</label>
-                                    <input id="reserve_date" name="reserve_date" id="from" size="10" type="text" data-start_for="expiration_date" class="flatpickr futuredate" />
+                                    <input id="reserve_date" name="reserve_date" id="from" size="10" type="text" data-date_to="expiration_date" class="flatpickr futuredate" />
                                 </li>
                             [% END %]