Update README.md

Author: mathieukaelin

README.md

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 # MagAlpha library
-[![Compile Examples](https://github.com/monolithicpower/MagAlpha-Arduino-Library/workflows/Compile%20Examples/badge.svg)](https://github.com/monolithicpower/MagAlpha-Arduino-Library/actions?workflow=Compile+Examples)
+[![Compile Examples](https://github.com/monolithicpower/MagAlpha-Arduino-Library/actions/workflows/compile-examples.yml/badge.svg)](https://github.com/monolithicpower/MagAlpha-Arduino-Library/actions/workflows/compile-examples.yml)
 
 Arduino library for the MPS MagAlpha magnetic angle sensor.