How do I repair for oil leaks around spark plugs?

Well there should not be any oil weeping UP out of the cylinders. First I would call a dealer service department and ask if there is a recall or a tech bulletin on the issue. Then I would ask if this is a common problem on that engine, if so how is it dealt with. Generally it is the valve cover gasket so I would make every effort to rule that out. If it can not be ruled out, then replace it. When replacing gaskets make very effort to clean both metal surfaces, do not reuse a gasket and bear in mind you are not dealing with steal or iron so be careful of what tool you use to clean the old gasket material away.