docs(label): add synopsis and examples to label commands
Description
Adds Long (Synopsis) fields and improved Examples to the label
command and its five subcommands, as part of the style guide audit
identified in #8263 (closed).
Each Synopsis explains the command's default behavior, key flags, and
when to use --repo to target another project. The Examples section
on each page is annotated with # comment lines that describe the
intent of each invocation, following the pattern established in
!3270 (merged) and
!3274 (merged).
Commands updated:
labellabel createlabel deletelabel editlabel getlabel list
Content follows the documentation style guide and the GitLab CLI (glab) documentation style guide.
Related issues and merge requests
Documentation
If this MR adds or updates CLI command documentation, follow the conventions in the
GitLab CLI (glab) documentation style guide,
run make gen-docs, and commit the updated files in docs/source/.