Inadvertently changed an option but I don't know what I changed.

Hi all, 

I am no Rider expert and use it in conjunction with Unity for work.

When I started using Rider, it would reformat my code to layout it out like this; at first I hated it, but then I got used to it and I love it:

var shortName      = a;
var muchLongerName = b;

And now I have managed to change something that has made it stop doing this, could anyone point me in the direction of the setting I have changed?

Cheers.

Luke.