Bump previous navier stokes discretization in docu
Bump previous navier stokes discretization in docu

- first step to convert old discretization to new phi coordinate

feltor-dev/feltor,feltor-dev/feltor,mwiesenberger/feltor,feltor-dev/feltor,feltor-dev/feltor,mwiesenberger/feltor,mwiesenberger/feltor,mwiesenberger/feltor