util/get_maintainer.pl: Fix top_of_kernel_tree check

The script checks for a folder called documentation, while the folder
name is Documentation.

Without this change, I get this when running the script:
util/scripts/get_maintainer.pl: The current directory does not appear to be
 a coreboot source tree.

Change-Id: Ied7ead7dfec33e9324f06d0ef60dcd6d7ba40104
Signed-off-by: Ben Gardner <gardner.ben@gmail.com>
Reviewed-on: https://review.coreboot.org/13062
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

0 files changed, 0 insertions, 0 deletions