Update README.md

Author: teamrob

README.md

@@ -37,7 +37,7 @@ Intro to programming (lessons 1-6)
 - Advanced micro:pet project (2 lessons)
 
 ## License
-You are free to fork or clone this material. See [Licence.md](https://github.com/arm-university/MicroPython-for-microbit/blob/main/Licence) for the complete license.
+You are free to fork or clone this material. See [Licence.md](https://github.com/arm-university/MicroPython-for-microbit/blob/main/Licence.md) for the complete license.
 
 ## Inclusive Language Commitment
 Arm is committed to making the language we use inclusive, meaningful, and respectful. Our goal is to remove and replace non-inclusive language from our vocabulary to reflect our values and represent our global ecosystem.