some improvements

src/Model/GContact.php

@@ -1071,7 +1071,7 @@ class GContact
 		$r = DBA::selectFirst('gcontact', ['url'], [
 			'`network` = ? 
 			AND `last_contact` >= `last_failure`  
-			AND	`updated` > ?',
+			AND `updated` > ?',
 			Protocol::DFRN,
 			DateTimeFormat::utc('now - 1 month'),
 		], ['order' => ['RAND()']]);

src/Module/RandomProfile.php

@@ -7,7 +7,7 @@ use Friendica\Model\Contact;
 use Friendica\Model\GContact;
 
 /**
- * Redirects to a random profile of this node
+ * Redirects to a random Friendica profile this node knows about
  */
 class RandomProfile extends BaseModule
 {