Fix link reference

Author: gudnuf

17.md

@@ -14,7 +14,7 @@ The websocket enables real-time subscriptions that wallets can use to receive no
 
 - [NUT-07][07] for proof state subscriptions
 - [NUT-23][23] for bolt11 mint and melt quote subscriptions
-- [NUT-25][23] for bolt12 mint and melt quote subscriptions
+- [NUT-25][25] for bolt12 mint and melt quote subscriptions
 
 ## General Flow