When I open terminal is now saying Bash every time.. How can I remove it?

Okay, so I have a problem...

I was googling why I had to write my password two times every time I had to log in to my macbook air..

Then i found this site: OS X: How to disable automatic login when FileVault is enabled - Apple Support

So I followed the site, and wrote the first command line in

sudo defaults write /Library/Preferences/com.apple.loginwindow DisableFDEAutoLogin -bool YES

Then my terminal said it needed my password, so i entered my password.. then terminal changed to bash every time i opens it...

So i wrote then the other command line form the site, since i had no clue what i was doing..

sudo defaults delete /Library/Preferences/com.apple.loginwindow DisableFDEAutoLogin

That didn't fix any thing.. So how the **** do i get rid of bash 😟

My terminal looks like this after all this... When i opens it.

Please help, i'm kinda scared i ****** up my macbook.

If you need any more information, just ask, i'm on 24/7 (almost)