Documentation: s390/vfio-ap: eliminate duplicated word

Documentation: s390/vfio-ap: eliminate duplicated word

Drop the doubled word "the".

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Pierre Morel <pmorel@linux.ibm.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Cc: Tony Krowiak <akrowiak@linux.ibm.com>
Cc: Pierre Morel <pmorel@linux.ibm.com>
Cc: Halil Pasic <pasic@linux.ibm.com>
Cc: linux-s390@vger.kernel.org
Link: https://lore.kernel.org/r/20200707180414.10467-17-rdunlap@infradead.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>