net: qualcomm: rmnet: Correct spelling in if_rmnet.h

Correct spelling in if_rmnet.h
As reported by codespell.

Cc: Sean Tranchetti <quic_stranche@quicinc.com>
Signed-off-by: Simon Horman <horms@kernel.org>
Reviewed-by: Subash Abhinov Kasiviswanathan <quic_subashab@quicinc.com>
Link: https://patch.msgid.link/20240822-net-spell-v1-6-3a98971ce2d2@kernel.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>

include/linux/if_rmnet.h

@@ -42,7 +42,7 @@ struct rmnet_map_ul_csum_header {
 
 /* csum_info field:
  *  OFFSET:	where (offset in bytes) to insert computed checksum
- *  UDP:	1 = UDP checksum (zero checkum means no checksum)
+ *  UDP:	1 = UDP checksum (zero checksum means no checksum)
  *  ENABLED:	1 = checksum computation requested
  */
 #define MAP_CSUM_UL_OFFSET_MASK		GENMASK(13, 0)