Update README.md

Author: silabs-CongD

platform_trng/README.md

@@ -19,9 +19,9 @@ This project uses the True Random Number Generator (TRNG) peripheral of the EFM3
 
 > It is highly recommended to use the [software libraries](https://docs.silabs.com/mbed-tls/latest/group-rng-module) provided by Silicon Labs to access the TRNG module. This example should serve as a reference for users that choose to write their own low-level drivers....
 
-## Gecko SDK version ##
+## SDK version ##
 
-- GSDK v4.4.3
+- [SiSDK v2024.12.0](https://github.com/SiliconLabs/simplicity_sdk)
 
 ## Hardware Required ##