Update FUNDING.yml

.github/FUNDING.yml

@@ -8,6 +8,8 @@ tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/
 community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
 liberapay: # Replace with a single Liberapay username
 issuehunt: # Replace with a single IssueHunt username
-otechie: # Replace with a single Otechie username
 lfx_crowdfunding: # Replace with a single LFX Crowdfunding project-name e.g., cloud-foundry
-custom: buymeacoffee.com/brunosx
+polar: # Replace with a single Polar username
+buy_me_a_coffee: brunosx
+thanks_dev: # Replace with a single thanks.dev username
+custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']