/usr/share/crawl/docs/ is in crawl-common 2:0.10.3-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/crawl/docs/CREDITS.txt
/usr/share/crawl/docs/aptitudes.txt
/usr/share/crawl/docs/arena.txt
/usr/share/crawl/docs/changelog.txt
/usr/share/crawl/docs/crawl_manual.txt
/usr/share/crawl/docs/develop/
/usr/share/crawl/docs/develop/IRC.txt
/usr/share/crawl/docs/develop/coding_conventions.txt
/usr/share/crawl/docs/develop/gdb_tips.txt
/usr/share/crawl/docs/develop/levels/
/usr/share/crawl/docs/develop/levels/advanced.txt
/usr/share/crawl/docs/develop/levels/introduction.txt
/usr/share/crawl/docs/develop/levels/syntax.txt
/usr/share/crawl/docs/develop/levels/triggerables.txt
/usr/share/crawl/docs/develop/monster_speech.txt
/usr/share/crawl/docs/develop/patch_guide.txt
/usr/share/crawl/docs/develop/process.txt
/usr/share/crawl/docs/develop/release.txt
/usr/share/crawl/docs/develop/save_compatibility.txt
/usr/share/crawl/docs/develop/spells.txt
/usr/share/crawl/docs/develop/testing.txt
/usr/share/crawl/docs/develop/tiles_creation.txt
/usr/share/crawl/docs/key_changes.txt
/usr/share/crawl/docs/keybind.txt
/usr/share/crawl/docs/macros_guide.txt
/usr/share/crawl/docs/options_guide.txt
/usr/share/crawl/docs/quickstart.txt
/usr/share/crawl/docs/ssh_guide.txt
/usr/share/crawl/docs/tiles_help.txt