media: docs: Remove the repeated word "the" in docs.

Fix "The the" typo in the documentation.
Signed-off-by: hanchunchao <hanchunchao@inspur.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
[hverkuil: added commit log]

Documentation/userspace-api/media/dvb/frontend_f_open.rst

@@ -91,7 +91,7 @@ appropriately.
        -  The caller has no permission to access the device.
 
     -  - ``EBUSY``
-       -  The the device driver is already in use.
+       -  The device driver is already in use.
 
     -  - ``EMFILE``
        -  The process already has the maximum number of files open.