I've had worse on my TL rims for the last 70k miles...and did more damage to my front of the 690 enduro on OBCDR than yours. I certainly wouldn't worry about it in the least.
2010 690 EnduroR
2013 500 Exc
20+ years, 100k+ miles, 15 state's, 10 Countries, 3 years on asphault looking for the checkered flag, 7 dirt trying to stay on my minute.