Update BoAT_User_Guide_en.md
Function and architecture :  change "based on cellular modules connect to the blockchain and realize offer data on-chain services." to "based on cellular modules connect to the blockchain and access on-chain services."
@@ -23,7 +23,7 @@ The intended readers of this article are customers who integrate the BoAT IoT Fr
## Function and architecture
-BoAT IoT Framework is a C language blockchain client framework software for cellular modules, which is easy to be ported to various modules and helps IoT applications based on cellular modules connect to the blockchain and realize data on-chain services. The functions provided by the BoAT IoT Framework SDK to IoT applications include initiating on-chain transactions, automatic generation of smart contract C interface code, calling smart contracts, and managing blockchain keys.
+BoAT IoT Framework is a C language blockchain client framework software for cellular modules, which is easy to be ported to various modules and helps IoT applications based on cellular modules connect to the blockchain and access on-chain services. The functions provided by the BoAT IoT Framework SDK to IoT applications include initiating on-chain transactions, automatic generation of smart contract C interface code, calling smart contracts, and managing blockchain keys.
**Supported blockchain:**
Ethereum
