Updated readme

Author: lupyuen

scripts/stm32l4/README.md

@@ -2,7 +2,7 @@
 
 [`build-boot.cmd`](build-boot.cmd), [`.sh`](build-boot.sh): Build the bootloader by running `newt build stm32l4_boot`
 
-[`build-app.cmd`](build-app.cmd), [`.sh`](build-app.sh): Build the application by running `newt build stm32l4_my_sensor`. Also builds the Rust application and injects the compiled Rust code into the build.
+[`build-app.cmd`](../build-app.cmd), [`.sh`](../build-app.sh): Build the application by running `newt build stm32l4_my_sensor`. Also builds the Rust application and injects the compiled Rust code into the build.
 
 [`image-app.cmd`](image-app.cmd), [`.sh`](image-app.sh): Create the application firmware image: `newt create-image -v stm32l4_my_sensor 1.0.0`