* Lock pplcv to v0.6.1
To avoid breaking changes which arose from recent updates in pplcv , fix pplcv to v0.6.1
* Mentioned Version as ARG
* Mentioned Version changes of pplcv in build.md
* Update docs/en/build.md
Co-authored-by: AllentDan <41138331+AllentDan@users.noreply.github.com>
* Change version stuff in cn_build.md
Co-authored-by: AllentDan <41138331+AllentDan@users.noreply.github.com>