[BEL-25]: fix: fix sponsor ID 'elas na ti' to lowercase

Author: thalisonwilker

data/events/2025/belem/main.yml

@@ -119,7 +119,7 @@ sponsors:
     level: support
   - id: kubeevents
     level: support
-  - id: elas-na-ti-BEL-2025
+  - id: elas-na-ti-bel-2025
     level: support
 
 sponsors_accepted: "yes" # Whether you want "Become a XXX Sponsor!" link