Fixed TransactionBuilder docs

lib/TransactionBuilder.js

@@ -34,7 +34,7 @@
 //     var tx = builder.build();
 //     broadcast(tx.serialize());
 //
-//     //Searialize it and pass it around...
+//     //Serialize it and pass it around...
 //     var string = JSON.stringify(builder.toObj()); 
 //     // then...
 //     var builder = TransactionBuilder.fromObj(JSON.parse(str); 
@@ -189,7 +189,7 @@ TransactionBuilder.infoForP2sh = function(opts, networkName) {
 //  ```
 //      [{
 //         address: "mqSjTad2TKbPcKQ3Jq4kgCkKatyN44UMgZ",
-//         hash: "2ac165fa7a3a2b535d106a0041c7568d03b531e58aeccdd3199d7289ab12cfc1",
+//         txid: "2ac165fa7a3a2b535d106a0041c7568d03b531e58aeccdd3199d7289ab12cfc1",
 //         scriptPubKey: "76a9146ce4e1163eb18939b1440c42844d5f0261c0338288ac",
 //         vout: 1,
 //         amount: 0.01,