fixed checkbox in dmarc template

interface/web/dns/templates/dns_dmarc_edit.htm

@@ -147,7 +147,7 @@
             <div class="form-group">
                 <label class="col-sm-2 control-label">{tmpl_var name='active_txt'}</label>
                 <div class="col-sm-3">
-                    {tmpl_var name='active'}
+					<input type="checkbox" value="1" id="active" name="active" {tmpl_var name='active'} </input>
                 </div>
             </div>