Fix typo in the ci/cd cmake command line

Author: Mathieu Taillefumier

.ci/include/cscs/01-test-templates.yml

@@ -28,7 +28,7 @@ include:
               -DTM_USE_QUDA=ON \
               -DTM_USE_LEMON=ON \
               -DTM_ENABLE_ALIGNMENT=32 \
-              -DTM_USE_GAUGE_COPY-ON \
+              -DTM_USE_GAUGE_COPY=ON \
               -DTM_USE_HALFSPINOR=ON \
               -DCMAKE_INSTALL_PREFIX=../install_dir ..
         make