Update wiki templates layout

What does this MR do and why?

• Updates wiki templates layout
  • Moves templates list into card layout
• Updates some UI text to use sentence case

Screenshots or screen recordings

Before	After

How to set up and validate locally

Go to wiki templates (ie http://127.0.0.1:3000/flightjs/Flight/-/wikis/templates)

Links

• ✂️ UX Paper Cuts 17.1 → Improve Wiki Experience (#452225 - closed)