bumped number of transaction types to 7
might have fallen through the cracks during the state proof update
@@ -8,7 +8,7 @@ At the end of this section are several useful transaction-related how-tos.
When you are given a transaction to sign, understanding its underlying representation will help you verify that the details of the transaction are correct.
# Transaction Types
-There are [six transaction types](https://github.com/algorand/go-algorand/blob/master/protocol/txntype.go) in the Algorand Protocol:
+There are [seven transaction types](https://github.com/algorand/go-algorand/blob/master/protocol/txntype.go) in the Algorand Protocol:
- [Payment](#payment-transaction)
- [Key Registration](#key-registration-transaction)
