The correct way is to use a panel removal tool to pull the entire assembly down, then remove the light assembly from the switch housing, then remove the lens.
However, there is a shortcut that I used that works if you are careful.
1. Get two small flathead screwdrivers and wrap the blades ONCE in electrical tape, anymore and the blade will be too thick.
2. If you look at the lens, about 1/4 inch in, you'll see six dark spots (one on each side and two for the front and two for the rear).
3. Start with the left side. Use one flathead, wedge it between the lens and the plastic trim, and pry it open just enough to get the second screwdriver in there and disengage that clip (you disengage it by sticking that screwdriver on the inside of the clip and pushing it toward the outside). Then work your way around.
4. Pull bulbs, insert LED bulbs.
5. Pop lens back into place.
Just be careful doing it that way. I marred a little bit of my trim but was able to use fine grit sandpaper to blend it in so it isn't noticeable, and if you pry too much, you'll probably break a clip.