[PATCH] proc: update MAINTAINERS with proc.txt

[Alexey Dobriyan]

Turns out that /proc has official documentation and people even trying
to keep it uptodate.

Signed-off-by: Alexey Dobriyan <adobriyan@xxxxxxxxx>
---

 MAINTAINERS |    1 +
 1 file changed, 1 insertion(+)

--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -11995,6 +11995,7 @@ S:	Maintained
 F:	fs/proc/
 F:	include/linux/proc_fs.h
 F:	tools/testing/selftests/proc/
+F:	Documentation/filesystems/proc.txt
 
 PROC SYSCTL
 M:	"Luis R. Rodriguez" <mcgrof@xxxxxxxxxx>