Update bip-0048.mediawiki

Author: Fonta1n3

bip-0048.mediawiki

@@ -50,7 +50,7 @@ Hardened derivation is used at this level.
 
 ===Coin type===
 
-One master node (seed) can be used for either multiple Bitcoin networks.
+One master node (seed) can be used for multiple Bitcoin networks.
 Sharing the same space for various networks has some disadvantages.
 
 Avoiding reusing addresses across networks and improving privacy issues.