fix: "for" attribute in config display (#5398)

app/views/configure/display.phtml

@@ -26,7 +26,7 @@
 		</div>
 
 		<div class="form-group">
-			<label class="group-name" for="language"><?= _t('conf.display.timezone') ?></label>
+			<label class="group-name" for="timezone"><?= _t('conf.display.timezone') ?></label>
 			<div class="group-controls">
 				<select name="timezone" id="timezone" data-leave-validation="<?= FreshRSS_Context::$user_conf->timezone ?>">
 				<?php