Update 01 Felix and Herbert.md

Clarifications for New Starters as the terms were unclear, especially that you were creating two sets of scripts.
Ok agree - use Sprite Pane in place of Summary Area - noted that another worksheet 'Ghostbusters' used this term in Step1 at the end of the second Activity checklist - hence suggesting it for consistency - however looks like both are wrong and should be using Sprite Pane (v2) nomenclature.