Documentation/admin-guide: mm/ksm: drop doubled word

Drop the doubled word "the".

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mm@kvack.org
Link: https://lore.kernel.org/r/20200704032020.21923-6-rdunlap@infradead.org


Signed-off-by: Jonathan Corbet <corbet@lwn.net>