ubi: ubi-media.h: Fix comment typo

The double `the' is duplicated in the comment, remove one.

Signed-off-by: Jason Wang <[e-mail]>
Reviewed-by: Zhihao Cheng <[e-mail]>
Signed-off-by: Richard Weinberger <[e-mail]>

drivers/mtd/ubi/ubi-media.h

···
  * is changed radically. This field is duplicated in the volume identifier
  * header.
  *
- * The @vid_hdr_offset and @data_offset fields contain the offset of the the
+ * The @vid_hdr_offset and @data_offset fields contain the offset of the
  * volume identifier header and user data, relative to the beginning of the
  * physical eraseblock. These values have to be the same for all physical
  * eraseblocks.