media: Documentation: userspace-api/media: v4l/vidioc-qbuf: drop doubled word

Drop the doubled word "the".

Signed-off-by: Randy Dunlap <[e-mail]>
Cc: Jonathan Corbet <[e-mail]>
Cc: [e-mail]
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

Documentation/userspace-api/media/v4l/vidioc-qbuf.rst

···
     The buffer ``type`` is not supported, or the ``index`` is out of
     bounds, or no buffers have been allocated yet, or the ``userptr`` or
     ``length`` are invalid, or the ``V4L2_BUF_FLAG_REQUEST_FD`` flag was
-    set but the the given ``request_fd`` was invalid, or ``m.fd`` was
+    set but the given ``request_fd`` was invalid, or ``m.fd`` was
     an invalid DMABUF file descriptor.
 
 EIO