I'd imagine trucks would still be diesel, so it'd probably make sense just to remove some of the pumps and replace them with rapid chargers. I doubt the fuel stations themselves will disappear, just cater to a different market.
OTOH in the UK at least, I think public charging is way too expensive compared to home charging, so I think most public charging is done out of necessity on long journeys, so the number of people using chargers would probably be significantly lower than number of people filling up with fuel.
Electric semi trucks have appeared from all major European manufacturers in the last years and I expect them to become dominant even quicker than electric cars on simple cost grounds. Electricity is cheaper than diesel and due to favorable regulations in Europe, for many use cases there is little to no time lost charging and usually also no loss in load capacity.