fix error

Author: th-skam

.github/workflows/ci.yml

@@ -38,8 +38,8 @@ jobs:
             -DCMAKE_PREFIX_PATH=$SOFA_ROOT/lib/cmake \
             -DCMAKE_BUILD_TYPE=Release \
             -DCMAKE_INSTALL_PREFIX=$GITHUB_WORKSPACE/install/CollisionAlgorithm \
-            ..
-          ninja install
+            ../src \
+          && ninja install
           
       - name: Checkout source code
         uses: actions/checkout@v2