Add doc for Loading script in ghci
Add doc for Loading script in ghci

Fixes #2788

martin-kolinek/stack,Fuuzetsu/stack,Fuuzetsu/stack,anton-dessiatov/stack,juhp/stack,MichielDerhaeg/stack,mrkkrp/stack,anton-dessiatov/stack,juhp/stack,mrkkrp/stack,martin-kolinek/stack,MichielDerhaeg/stack