Update Modern Derivation Standard.mediawiki

minor edit

Author: Robert Spigler

Modern Derivation Standard.mediawiki

@@ -101,7 +101,7 @@ This number is used as child index in BIP32 derivation.
 
 Hardened derivation is used at this level.
 
-It is crucial that the index is increased for each new wallet joined or private/public keys created; for both privacy and cryptographic purposes.
+It is crucial that this level is increased for each new wallet joined or private/public keys created; for both privacy and cryptographic purposes.
 For example, in multisignature wallets, before sending a new key record to a coordinator, the wallet must increment the <code>account'</code> level.  Before creating it's own single signature wallet, the <code>account'</code> level must again be incremented.
 This prevents key reuse - across single signature and multisignature wallets, across ECDSA and Schnorr signatures, and inbetween the same wallet types.