Update 2016-01-18-segwit-wallet-dev.md
Update 2016-01-18-segwit-wallet-dev.md

BIP141 states: "The only item in scriptSig is hashed with HASH160" under the section titled: "Witness program nested in BIP16 P2SH"
bitcoin-core/bitcoincore.org,bitcoin-core/bitcoincore.org,bitcoin-core/bitcoincore.org,bitcoin-core/bitcoincore.org,bitcoin-core/bitcoincore.org,bitcoin-core/bitcoincore.org