chore: update funding url

.github/FUNDING.yml

@@ -1,2 +1,2 @@
-custom: "https://omo.so/prberg"
+custom: "https://3cities.xyz/#/pay?c=CAESFAKY9DMuOFdjE4Wzl2YyUFipPiSfIgICATICCAJaFURvbmF0aW9uIHRvIFBhdWwgQmVyZw"
 github: "PaulRBerg"