Update FUNDING.yml

.github/FUNDING.yml

@@ -1,7 +1,7 @@
 # These are supported funding model platforms
 
 patreon: NotYoojun # Replace with a single Patreon username
-custom: ['paypal.me/NotYoojun','afdian.net/a/NotYoojun'] # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']
+custom: ['afdian.net/a/NotYoojun'] # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']
 github: # Replace with up to 4 GitHub Sponsors-enabled usernames e.g., [user1, user2]
 open_collective: # Replace with a single Open Collective username
 ko_fi: # Replace with a single Ko-fi username