Merge branch 'ja/doc-lint-sections-and-synopsis'

Doc lint updates to encourage the newer and easier-to-use `synopsis` format, with fixes to a handful of existing uses. * ja/doc-lint-sections-and-synopsis: doc lint: check that synopsis manpages have synopsis inlines doc:git-for-each-ref: fix styling and typos doc: check for absence of the form --[no-]parameter doc: check for absence of multiple terms in each entry of desc list doc: check well-formedness of delimited sections doc: test linkgit macros for well-formedness