scripts/spelling: add a few more typos

This commit adds typos I found from another work.

Signed-off-by: SeongJae Park <sjpark@amazon.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Joe Perches <joe@perches.com>
Link: http://lkml.kernel.org/r/20200605092502.18018-3-sjpark@amazon.com


Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>