The wording "delivers an attack" always means physical damage. "Deals <element/aspect> damage" is always magical.
The inclusion of the word "ranged" would be redundant, as the range is listed as 25y and anyone interested in the range can see this on the tooltip. However, if one wanted to argue for a change, it should definitely not be to "delivers a ranged attack" because Enchanted weaponskills are magical. It should be, "Deals unaspected damage with a potency of x to a target in range," and even that's not the greatest because every skill only affects a target in range, which brings us back to "just read the Range field on the tooltip".