Ensure that descriptions of and links to workshop content are up-to-date

[github-actions]

Revise the course website to reflect the content this workshop will be covering.

For virtual workshops, the areas that need to be updated are:

• The first bulletpoint in virtual-workshop/workshop-structure.md (which becomes workshop/workshop-structure.md)
• The modules we link to in virtual-workshop/workshop-materials.md (which becomes workshop/workshop-materials.md)

[Jaclyn Taroni]

Closed via #12