Update bip-0048.mediawiki

Author: Fonta1n3

bip-0048.mediawiki

@@ -2,7 +2,7 @@
   BIP: ?
   Layer: Applications
   Title: Multi-Script Hierarchy for Multi-Sig Wallets
-  Author: Peter Denton <[email protected]>
+  Author: Fontaine <[email protected]>
   Comments-Summary: No comments
   Comments-URI: https://github.com/bitcoin/bips/wiki/Comments:BIP-?
   Status: Proposed