Update variants/STM32MP157_DK/README.md

Co-Authored-By: Bumsik Kim <[email protected]>

Author: fpistm

variants/STM32MP157_DK/README.md

@@ -96,7 +96,7 @@ There are additional pins for LEDs and buttons.
 
 ## Uploading
 
-As mentioned above `run_arduino.sh` file have to be uploaded manually to the Linux file system in order to be executed on the board directly through the Linux console. There are many ways to upload the file.
+As mentioned above `run_arduino.sh` file have to be uploaded manually from the PC to the board's Linux file system in order to be executed on the board directly through the board's Linux console. There are many ways to upload the file.
 
 ### Over Network