MAINTAINERS: downgrade support for man-pages

Unfortunately, Linux Foundation funding for my work on
man-pages/testing/doc under the auspices of the LF documentation
fellowship unfortunately ran out a short while ago (after earlier attempts
to seek funding, only Google stepped forward with a bit of further funding
for the position), so the patch below acknowledges something closer to
reality.

Unfortunately, there will (probably very) soon be a further downgrade from
"Maintained" to "Odd Fixes" or "Orphan", unless some funding miracle
occurs. So, if anyone is looking to become man-pages maintainer, there
may soon be an opening (okay, don't trample me in the rush ;-).)

Signed-off-by: Michael Kerrisk <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

MAINTAINERS

···
 S:	Supported
 
 DOCUMENTATION (/Documentation directory)
-P:	Michael Kerrisk
-M:	[e-mail]
 P:	Randy Dunlap
 M:	[e-mail]
 L:	[e-mail]
···
 M:	[e-mail]
 W:	http://www.kernel.org/doc/man-pages
 L:	[e-mail]
-S:	Supported
+S:	Maintained
 
 MARVELL LIBERTAS WIRELESS DRIVER
 P:	Dan Williams