Leak in my disc brakes
You definitely do not want to ignore this. Loss of brake function is obviously dangerous.

At the very least, check regularly for further leaks in this area, before and after you ride. You mat find that the leak re-occurs after a while even though you cannot replicate it by squeezing the lever a few times.

You can of course have a repair shop look at it. Checking the hose for damage and replacing the bolt, olive and insert is probably a good idea.