Am I allowed to edit the game after the voting period and after the jam ends, I know I can fix bugs and stuff that may be broken, but am I able to edit more things after everything ends
Afaik there is no rules against it once the voting ends.
Since you can upload different versions of your game to the same project afaik, it could be fun to rename it to something like "GameJam Edition" and leave that up so future players can always go back and see how it all began. That's what I plan to do with mine.