Update FUNDING.yml

Author: Yggdroot

.github/FUNDING.yml

@@ -10,4 +10,4 @@ liberapay: # Replace with a single Liberapay username
 issuehunt: # Replace with a single IssueHunt username
 otechie: # Replace with a single Otechie username
 custom: # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']
-  - https://github.com/Yggdroot/LeaderF#heart-sponsor
+  - https://github.com/Yggdroot/SponsorMe/blob/main/README.md#donate