Link to permanent PR of reference implementation

Author: btcdrak

bip-0152.mediawiki

@@ -196,7 +196,7 @@ Older clients remain fully compatible and interoperable after this change.
 
 ==Implementation==
 
-https://github.com/TheBlueMatt/bitcoin/tree/udp
+https://github.com/bitcoin/bitcoin/pull/8068
 
 ==Acknowledgements==