As long as the dogs have their rabies shots up to date there shouldn't be any worries.
Its not common a rodent would be carrying rabies and this time of year baby rodents often fall prey to carnivores because they are not alert enough to predators being around. Your dogs probably caught a young one away from its hole.
Only if the rodent attacked them first would there be a bigger worry that it was ill in some way.
You can clean the wound with hydrogen peroxide or betadine iodine solution after thoroughly rinsing it with water so you can't possibly get any ground hog saliva on you.
You can apply neosporin or triple antibiotic ointment to the injury to help reduce chances of infection too.
You can check with your vet to see if they feel you should rebooster the rabies shots but you probably do not need to do that.
Hope this helps you!

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