doc: fix broken references

There are numerous broken references to Documentation files (in other
Documentation files, in comments, etc.). These broken references are
caused by typo's in the references, and by renames or removals of the
Documentation files. Some broken references are simply odd.

Fix these broken references, sometimes by dropping the irrelevant text
they were part of.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/Documentation/power/userland-swsusp.txt b/Documentation/power/userland-swsusp.txt
index 1101bee..0e87082 100644
--- a/Documentation/power/userland-swsusp.txt
+++ b/Documentation/power/userland-swsusp.txt
@@ -77,7 +77,8 @@
 	resume_swap_area, as defined in kernel/power/suspend_ioctls.h,
 	containing the resume device specification and the offset); for swap
 	partitions the offset is always 0, but it is different from zero for
-	swap files (see Documentation/swsusp-and-swap-files.txt for details).
+	swap files (see Documentation/power/swsusp-and-swap-files.txt for
+	details).
 
 SNAPSHOT_PLATFORM_SUPPORT - enable/disable the hibernation platform support,
 	depending on the argument value (enable, if the argument is nonzero)