How I can edit my post?

Hello!

How I can edit my post?
https://forums.armory3d.org/t/pc-offroad-mania/3738

I want change game link from https://www.kartridge.com/games/grmaster/offroad-mania
to https://store.steampowered.com/app/1222040/Offroad_Mania/

Just click on the pen icon below message to change it