Update README.md

Author: ericwolz

README.md

@@ -163,7 +163,7 @@ linux
 
 ## Adaptation layer for ThreadX
 
-ThreadX is an advanced real-time operating system (RTOS) designed specifically for deeply embedded applications. To help ease application migration to THreadX RTOS, ThreadX provides [adaption layers](https://github.com/eclipse-threadx/threadx/tree/master/utility/rtos_compatibility_layers) for various legacy RTOS APIs (FreeRTOS, POSIX, OSEK, etc.).
+ThreadX is an advanced real-time operating system (RTOS) designed specifically for deeply embedded applications. To help ease application migration to ThreadX RTOS, ThreadX provides [adaption layers](https://github.com/eclipse-threadx/threadx/tree/master/utility/rtos_compatibility_layers) for various legacy RTOS APIs (FreeRTOS, POSIX, OSEK, etc.).
 
 ## Component dependencies