docs: Fix link to Build Status

Author: nightscape

README.md

@@ -2,7 +2,7 @@
 
 A library for querying Excel files with Apache Spark, for Spark SQL and DataFrames.
 
-[![Build Status](https://github.dev/mauch/spark-excel/workflows/CI/badge.svg)](https://github.dev/mauch/spark-excel/actions)
+[![Build Status](https://github.com/nightscape/spark-excel/workflows/CI/badge.svg)](https://github.com/nightscape/spark-excel/actions)
 [![Maven Central](https://maven-badges.herokuapp.com/maven-central/dev.mauch/spark-excel_2.12/badge.svg)](https://maven-badges.herokuapp.com/maven-central/dev.mauch/spark-excel_2.12)
 
 
@@ -251,4 +251,3 @@ We are grateful for their support in the initial development and open-sourcing o
 ## Star History
 
 [![Star History Chart](https://api.star-history.com/svg?repos=nightscape/spark-excel&type=Date)](https://star-history.com/#nightscape/spark-excel&Date)
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