rename workflow

Author: Franziska-Mueller

.github/workflows/cmake-multi-platform.yml

@@ -1,6 +1,6 @@
 # This starter workflow is for a CMake project running on multiple platforms. There is a different starter workflow if you just want a single platform.
 # See: https://github.com/actions/starter-workflows/blob/main/ci/cmake-single-platform.yml
-name: CMake on multiple platforms
+name: Multi-Platform Build
 
 on:
   push: