Hi Robliv44, welcome!
As MauddauberE mentions, if you take the screen off the city water connection inlet there is a valve inside that normally only allows water to flow in but not out. If you press on it, antifreeze will flow up that section of pipe and out the city water connection to properly winterize that portion. Just a word of caution though that you should do this after the pump is turned off and much of the pressure released out through a faucet, otherwise the pressure is enough to either damage the valve or at least soak you with antifreeze, don't ask me how I know this
You don't need much pressure in the line to get the antifreeze up. Press the valve until you see pink, done.
Don't worry about the section of hose between the fresh water tank and the pump, that will be drained enough by gravity, and the pump itself will be winterized with the winterization inlet to the pump.
My biggest tip though, is don't winterize yet
There's lots of good camping left in the season, even in Ontario!!