The correction is correct

You usually shouldn't fold. You just shouldn't bet. Here is where the size of the pot really does matter. You have about a 1/6 chance of drawing now that the turn has come. A little better if it is a flush draw. If, when it comes to you, you should call a bet if there are 5 bets to win (the pot plus prior bets this round). You have to add up what's in the pot and compare it to what you have to pay to see the next card. If it's less than 5 times, you should generally fold, greater, then call.

There are other factors which play into this decision. If there are players after you to act after you call, and you expect them to call and not raise, you can call a little more often as you have better odds if these people call. At some tables no one ever raises and it is easy to make this decision. If you call and the bet is raised, it is always correct to call again, as your odds are better for this call than the last one. If you have to call 2 or 3 bets, do the math. Often when you have to call 2 bets, you may likely have to call 3 because the original raiser may cap, so take that into consideration. The other factor is implied odds ... you may not quite have the pot odds for a call on the turn, but you know you can get another bet or 2 out of the river if you hit ... the probable value of this implied winnings should be added to the pot when making your decision.