Update ccpp.yml

Author: janbender

.github/workflows/ccpp.yml

@@ -32,7 +32,7 @@ jobs:
     steps:
     - uses: actions/checkout@v1
     - name: configure
-      run: mkdir build-release;cd build-release;make ..
+      run: mkdir build-release;cd build-release;cmake ..
     - name: build
       run: cmake --build build-release --config Release