Improve Quantization Setup Prompts and Doc

Author: zhenyan-zhang-meta

torchchat/utils/scripts/build_torchao_ops.sh

@@ -12,14 +12,14 @@ if [[ "$device" != "cpu" && "$device" != "mps" ]]; then
   exit 1
 fi
 
+source "$(dirname "${BASH_SOURCE[0]}")/install_utils.sh"
+
 if [ ! -d "${TORCHCHAT_ROOT}/torchao-build" ]; then
   echo "Directory ${TORCHCHAT_ROOT}/torchao-build does not exist."
   echo "Make sure you run bash torchchat/utils/scripts/clone_torchao.sh"
   exit 1
 fi
 
-source "$(dirname "${BASH_SOURCE[0]}")/install_utils.sh"
-
 pushd ${TORCHCHAT_ROOT}
 find_cmake_prefix_path
 install_torchao_aten_ops "$device"