[release-15.0] update docgen to embed commit ID in autogenerated doc frontmatter (#14056)#14072

ajm188 merged 1 commit intorelease-15.0vitessio/vitess:release-15.0from

backport-14056-to-release-15.0vitessio/vitess:backport-14056-to-release-15.0Copy head branch name to clipboard