docs: Slightly improve notation in QGT section
Created by: femtobit
This is just a small update to our docs to write out the covariance 〈AB〉_c as 〈AB〉 - 〈A〉〈B〉, since not everyone is familiar with the first notation.
Created by: femtobit
This is just a small update to our docs to write out the covariance 〈AB〉_c as 〈AB〉 - 〈A〉〈B〉, since not everyone is familiar with the first notation.