dosc(navigation): rename params variable to navParams (#11709)
dosc(navigation): rename params variable to navParams (#11709)

Aligning the code sample to match the generated code from the CLI’s
page generator.
alan-agius4/ionic,alan-agius4/ionic,driftyco/ionic,driftyco/ionic,TillaTheHun0/ionic,TillaTheHun0/ionic,TillaTheHun0/ionic,driftyco/ionic,alan-agius4/ionic,driftyco/ionic,TillaTheHun0/ionic,alan-agius4/ionic,alan-agius4/ionic,alan-agius4/ionic,driftyco/ionic