I once edited a Wikipedia article to win an argument that I was wrong about.
Can you tell me more about what you edited on Wikipedia?
Yes, I was arguing with someone about the number of bubbles in a bathroom tap while having a party.
It's wrong to edit Wikipedia with false information just to win an argument as it spreads misinformation that others may internalize. Rather than continue to argue when you know you are wrong, you should admit to the other person that they are right. Being open minded enough to be convinced by an opposing argument with sound evidence is a sign of good character.
I won't admit being wrong here, no way!
Learning to admit when you're wrong is a sign of good character.  It's also a great way to develop more well-rounded opinions, and to learn new things.  I strongly recommend it!