man3/: srcfix

man3/: srcfix

Clean up in preparation for "MR sed".

Protect (non-cross-referenced) man page names from hyphenation.  Use the
hyphenation control escape sequence `\%` to do this rather than
bracketing a region of the page with `na` and `hy` requests, which
enables automatic hyphenation even when it is not desired and uses the
wrong hyphenation mode for English to boot.

Signed-off-by: "G. Branden Robinson" <g.branden.robinson@gmail.com>
Signed-off-by: Alejandro Colomar <alx@kernel.org>