Update cfg/conf.sample.php

Co-authored-by: rugk <rugk+git@posteo.de>

cfg/conf.sample.php

@@ -129,7 +129,7 @@ limit = 10
 
 ; (optional) if you only want some source IP addresses to create pastes
 ; enter their IPv4 address(es) here, separated by commas
-; whitelist = "12.34.56.78,99.88.77.66"
+; whitelist_paste_creation = "12.34.56.78,99.88.77.66"
 
 ; (optional) if your website runs behind a reverse proxy or load balancer,
 ; set the HTTP header containing the visitors IP address, i.e. X_FORWARDED_FOR