Fix sharing/integration (#2669)

Arg, it looks like the submit button in sharing/integration page is broken in 1.15.2 :-(
Fix https://github.com/FreshRSS/FreshRSS/pull/2643

app/views/configure/integration.phtml

@@ -3,7 +3,7 @@
 <div class="post">
 	<a href="<?= _url('index', 'index') ?>"><?= _t('gen.action.back_to_rss_feeds') ?></a>
 
-	<form method="post" action="<?= _url('configure', 'sharing') ?>"
+	<form method="post" action="<?= _url('configure', 'integration') ?>"
 		data-simple='<div class="form-group" id="group-share-##key##"><label class="group-name">##label##</label><div class="group-controls"><div class="stick"><input type="text" id="share_##key##_name" name="share[##key##][name]" class="extend" value="##label##" placeholder="<?= _t('conf.sharing.share_name') ?>" size="64" />
 			<input type="url" id="share_##key##_url" name="share[##key##][url]" class="extend" value="" placeholder="<?= _t('gen.short.not_applicable') ?>" size="64" disabled /><a href="#" class="remove btn btn-attention" data-remove="group-share-##key##"><?= _i('close') ?></a></div>
 			<input type="hidden" id="share_##key##_type" name="share[##key##][type]" value="##type##" /></div></div>'