If it's just a bit of misting you can try to clean the seal out with a "sealmate" (or make one for free from a milk bottle).

If that fails or it's properly pissing out then just remove the forks and replace the seals (on both forks). You'll need fork oil, seals, dust seals and if you want to go the whole hog the bushes too. Not a hard job just a pig of one.