docs: alienware-wmi: fix typo

Fix a typo in the manual fan control description ("aproximate" ->
"approximate").

Signed-off-by: Akiyoshi Kurita <weibu@redadmin.org>
Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com>
Reviewed-by: Kurt Borja <kuurtb@gmail.com>
Link: https://patch.msgid.link/20251230213431.656106-1-weibu@redadmin.org
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

Author: redadmin-org

Documentation/admin-guide/laptops/alienware-wmi.rst

@@ -105,7 +105,7 @@ information.
 
 Manual fan control on the other hand, is not exposed directly by the AWCC
 interface. Instead it let's us control a fan `boost` value. This `boost` value
-has the following aproximate behavior over the fan pwm:
+has the following approximate behavior over the fan pwm:
 
 ::