Update FUNDING.yml

Author: luc-github

.github/FUNDING.yml

@@ -9,4 +9,4 @@ ko_fi: esp3d # Replace with a single Ko-fi username
 liberapay: ESP3D
 #issuehunt: # Replace with a single IssueHunt username
 #otechie: # Replace with a single Otechie username
-#custom: https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=WWLSJZ97FV834
+custom: https://www.paypal.com/donate/?hosted_button_id=FQL59C749A78L