LG-14290- Add step indicator to How To Verify View - Fix Specs

[gina-yamada]

🎫 Ticket

LG-14290 Eng: Add step indicator component to Opt-in page (How to Verify)

🛠 Summary of changes

• Update specs per review here
  1. Removed parentheses used inside it description in spec file
  2. Update specs to make readable

📜 Testing Plan

• [ ] Run specs in spec/views/idv/how_to_verify/show.html.erb_spec.rb and check for readability (you can also look in screenshots)

👀 Screenshots

Before:

After: