message: Fix flag in build script
diff: @@ -40,7 +40,7 @@ cmake \
  -C ${RAJA_HOSTCONFIG} \
  -DENABLE_OPENMP=On \
  -DENABLE_CUDA=Off \
  - -DENABLE_TARGET_OPENMP=On \
  + -DRAJA_ENABLE_TARGET_OPENMP=On \
  -DOpenMP_CXX_FLAGS="-fopenmp;-fopenmp-targets=nvptx64-nvidia-cuda" \
  -DCMAKE_INSTALL_PREFIX=../install_${BUILD_SUFFIX} \
  "$@" \
  