Slicing tutorial fix
@arora @tien-thinh.nguyen Can we agree to updated slice information for the slicing tutorial ->
* Slice1: [SST=128,SD=2] => NRF1, SMF1, UPF1, GNB1, UE1
* Slice2: [SST=1] => NRF1, SMF2, UPF2, GNB2, UE2
* Slice3: [SST=130,SD=4] => NRF2, SMF3, VPP-UPF3, GNB3, UE3
Edited by Rohan