games/chocolate-doom: Update 3.0.1 → 3.1.0

Changelog:
https://github.com/chocolate-doom/chocolate-doom/releases/tag/chocolate-doom-3.1.0

Improve port:

• Add default options FLUIDSYNTH PNG SAMPLERATE to prevent silent grab
• Disabling option DOCS prevents installation of man pages and documentation that are built during port building
• Remove GNU_CONFIGURE_MANPREFIX
• Pet portclippy

PR: 281630