MAINTAINERS: adjust kprobes.rst entry to new location

Commit 2165b82 ("docs: Move kprobes.rst from staging/ to trace/")
moved kprobes.rst, but missed to adjust the MAINTAINERS entry.

Hence, ./scripts/get_maintainer.pl --self-test=patterns complains:

  warning: no file matches    F:    Documentation/staging/kprobes.rst

Adjust the entry to the new file location.

Signed-off-by: Lukas Bulwahn <[email protected]>
Acked-by: Naveen N. Rao <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jonathan Corbet <[email protected]>

Author: bulwahn

MAINTAINERS

@@ -9597,7 +9597,7 @@ M:	Anil S Keshavamurthy <[email protected]>
 M:	"David S. Miller" <[email protected]>
 M:	Masami Hiramatsu <[email protected]>
 S:	Maintained
-F:	Documentation/staging/kprobes.rst
+F:	Documentation/trace/kprobes.rst
 F:	include/asm-generic/kprobes.h
 F:	include/linux/kprobes.h
 F:	kernel/kprobes.c