Merge branch 'ja/doc-synopsis-style-yet-more' into seen

Synopsis and options in the documentation for 'git format-patch',
'git imap-send', 'git send-email', and 'git request-pull' have been
updated to the modern style.

* ja/doc-synopsis-style-yet-more:
  doc: convert git-request-pull synopsis and options to new style
  doc: convert git-send-email synopsis and options to new style
  doc: convert git-format-patch synopsis and options to new style
  doc: convert git-imap-send synopsis and options to new style