Update signatures -> transactions

Author: gregnazario

apps/nextra/pages/en/build/sdks/ts-sdk/building-transactions.mdx

@@ -200,8 +200,8 @@ Building and sending transactions on-chain involves the following 5 steps:
 
 Transactions have a couple of additional features which let them adapt to your needs which you can learn about here:
 
-1. [Multi-Agent Signatures](building-transactions/multi-agent-transactions.mdx) - Allowing multiple accounts to be used for a single contract.
-2. [Orderless Signatures](building-transactions/orderless-transactions.mdx) - Allowing for transactions to be executed out of order for easier management.
+1. [Multi-Agent Transactions](building-transactions/multi-agent-transactions.mdx) - Allowing multiple accounts to be used for a single contract.
+2. [Orderless Transactions](building-transactions/orderless-transactions.mdx) - Allowing for transactions to be executed out of order for easier management.
 3. [Sponsoring Transactions](building-transactions/sponsoring-transactions.mdx) - Have another account pay gas fees for this transaction.
 4. [Batch Submit Transactions](building-transactions/batching-transactions.mdx) - How to send multiple transactions quickly from a single account.
 5. [Binary Canonical Serialization (BCS)](building-transactions/bcs-format.mdx) - The format used to serialize data for Aptos transactions.