doc: patch-id: convert to the modern synopsis style
Convert this command documentation to the modern synopsis style based on similar work.[1] Concretely: • Change the Synopsis section from `verse` to a `synopsis` block which will automatically apply the correct formatting to various elements (although this Synopsis is very simple) • Use backticks (`) for code-like things which will also use the correct formatting for interior placeholders (`<orderfile>`) • Use inline-verbatim on options listing † 1: E.g., • 026f2e3b (doc: convert git-log to new documentation format, 2025-07-07) • b983aaab (doc: convert git-switch manpage to new synopsis style, 2025-05-25) • 16543967 (doc: convert git-mergetool manpage to new synopsis style, 2025-05-25) Signed-off-by: Kristoffer Haugsbakk <code@khaugsbakk.name> Signed-off-by: Junio C Hamano <gitster@pobox.com>