is this topped correctly? or is it fimmed?

That is a solid 100% top. I zoomed in and see the clean circular break of the main stalk. You topped correctly. But next time. Wait a few more days and leave a little extra stem to die back and shrink. In some cases. If you plan on low stress training in the future. The main stalk will split down the middle if you pull on the 2 new tops too hard. Also an issue during flower. If heavy flowers aren't supported well. The main stem can split from the weight. So when you top. Leave some extra stem above your nodes. If what I said made sense. Great. If not. Research proper topping and you should see someone explaining it.. good luck 👍