Update transactions.adoc

Author: LandauRaz

components/Starknet/modules/architecture-and-concepts/pages/transactions.adoc

@@ -1,6 +1,6 @@
 = Transactions
 
-== Introduction
+== Overview
 Transactions are cryptographically signed instructions from accounts that update the state of the Starknet network. Starknet supports only xref:transaction_types[three types] of transactions, with each type going through the same xref:transaction_lifecycle[lifecycle] to receive its xref:transaction_statuses[execution and finality statuses]. Each transaction is issued a xref:transaction_receipt[receipt], which includes its statuses and other information about it.
 
 .Additional information
@@ -248,4 +248,4 @@ The following is an example of a transaction receipt:
   },
   "id": 1
 }
-----
+----