Documentation: laptops: fix spelling mistake

Signed-off-by: Eric Engestrom <[e-mail]>
Signed-off-by: Jonathan Corbet <[e-mail]>

Documentation/laptops/toshiba_haps.txt

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 This driver provides support for the accelerometer found in various Toshiba
-laptops, being called "Toshiba HDD Protection - Shock Sensor" officialy,
+laptops, being called "Toshiba HDD Protection - Shock Sensor" officially,
 and detects laptops automatically with this device.
 On Windows, Toshiba provided software monitors this device and provides
 automatic HDD protection (head unload) on sudden moves or harsh vibrations,