drm/vboxvideo: fix repeated words in comments

Delete the redundant word 'the'.

Signed-off-by: Jilin Yuan <[e-mail]>
Signed-off-by: Hans de Goede <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/vboxvideo/vboxvideo.h

···
  * VBE_DISPI_INDEX_VBOX_VIDEO is used to read the configuration information
  * from the host and issue commands to the host.
  *
- * The guest writes the VBE_DISPI_INDEX_VBOX_VIDEO index register, the the
+ * The guest writes the VBE_DISPI_INDEX_VBOX_VIDEO index register, the
  * following operations with the VBE data register can be performed:
  *
  * Operation            Result