Trawl net movement speed penalty never reaches intended maximum of 25%

In the tuning files, the maximum movement speed penalty of the trawl net is set at 0.25, but because of the way the function that updates the speed as the net is used is written, the actual maximum movement speed penalty ends up being eight ninths of 0.25, or about 0.222.

local function updatespeedmult(inst)
    local fullpenalty = TUNING.TRAWLING_SPEED_MULT
    local penalty = fullpenalty * (inst.components.inventory:NumItems()/TUNING.TRAWLNET_MAX_ITEMS)

This could be fixed by dividing by (TUNING.TRAWLNET_MAX_ITEMS - 1) instead, I think.