### What this PR does / why we need it? Modify installation.md for adding pip extra index of torch-npu ### How was this patch tested? No need --------- Signed-off-by: Icey <1790571317@qq.com>
### What this PR does / why we need it? Modify installation.md for adding pip extra index of torch-npu ### How was this patch tested? No need --------- Signed-off-by: Icey <1790571317@qq.com>