String update to better reflect the user action to enter device

"Swipe up to continue" is more informative than "Swipe to continue"

Fixes: 320786836
Test: manual
Flag: ACONFIG com.android.internal.foldables.flags.fold_grace_period_enabled DEVELOPMENT
Change-Id: I5a633f06509dae3e3047a1ff8d1d7cea7c2d6bc9
1 file changed