fix help modal to streamline user path and reduce help tickets

@stvstnfrd - Help Modal changes (has corresponding theme changes here: https://github.com/Stanford-Online/stanford-theme/pull/6)
It looks like some hard tab characters snuck in here. Please replace
them with 4-space soft tabs.

I forget which text editor you use, but it's worth changing your editor
settings to always insert soft tabs, to avoid this in the future.