Update FUNDING.yml

.github/FUNDING.yml

@@ -2,7 +2,7 @@
 
 github: [joeldenning]
 patreon: # Replace with a single Patreon username
-open_collective: 
+open_collective: # Replace with a single Open Collective username
 ko_fi: # Replace with a single Ko-fi username
 tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel
 community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry