textproc/man2html: Update to 3.1.20220714

• switch to DISTVERSION
• switch to upstream provided dedicated tarball
• pet portfmt

ChangeLog:

• trim unwanted quotes from -title parameter which came from shellcheck fixes
• adapt Schilling's subsection change
• amend the hyphenation fix to account for href's pointing to a subdirectory. improve handling of hyphenated link by adding an option "-leftside" for the left-sides from hyphenated manpage names (with a short fallback for "apt", "cvs", "git", "sccs' and "sysv")

PR: 265212