It should be just oozing out over the threads a tiny bit, but what you have is good or right. Rear end oil seems to be like airplane oil, one drop looks like a gallon :shock:
Keep an eye on it to see if it reseals, or give it another tug to see if it is tight. I know that on an Auto I have found them finger tight :?: :!: and not be leaking. I wipe mind down a dozen times, and it still looks wet.....