Co-authored-by: jiyuanhao<jiyuanhao1@huawei.com> # message auto-generated for no-merge-commit merge: !748 merge docs/sign into master [Docs] Update build.md Created-by: jiyuanhao Commit-by: jiyuanhao Merged-by: cann-robot Description: [Docs] Update build.md See merge request: cann/hcomm-dev!748