[PM-16868] Add csv export instructions for Nordpass

[djsmith85]

🎟️ Tracking

https://bitwarden.atlassian.net/browse/PM-16868

📔 Objective

When the Nordpass was selected on the import page, no instructions for th csv export were shown. This PR adds instructions when the Nordpass csv format is selected. I must have missed this, when I implemented the importer with bitwarden/jslib#360

📸 Screenshots

Before

After

⏰ Reminders before review

• Contributor guidelines followed
• All formatters and local linters executed and passed
• Written new unit and / or integration tests where applicable
• Protected functional changes with optionality (feature flags)
• Used internationalization (i18n) for all UI strings
• CI builds passed
• Communicated to DevOps any deployment requirements
• Updated any necessary documentation (Confluence, contributing docs) or informed the documentation team

🦮 Reviewer guidelines

• 👍 (:+1:) or similar for great changes
• 📝 (:memo:) or ℹ️ (:information_source:) for notes or general info
• ❓ (:question:) for questions
• 🤔 (:thinking:) or 💭 (:thought_balloon:) for more open inquiry that's not quite a confirmed issue and could potentially benefit from discussion
• 🎨 (:art:) for suggestions / improvements
• ❌ (:x:) or ⚠️ (:warning:) for more significant problems or concerns needing attention
• 🌱 (:seedling:) or ♻️ (:recycle:) for future improvements or indications of technical debt
• ⛏ (:pick:) for minor or nitpick changes

[github-actions]

Checkmarx One – Scan Summary & Details – b35dfd2f-3e66-4bde-a4f2-ac5fb4d4b8ea

Great job, no security vulnerabilities found in this Pull Request

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 34.13%. Comparing base (53618e8) to head (2e9b93e).
Report is 12 commits behind head on main.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #12829      +/-   ##
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- Coverage   34.13%   34.13%   -0.01%     
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  Files        2936     2936              
  Lines       90439    90440       +1     
  Branches    16990    16991       +1     
==========================================
  Hits        30871    30871              
- Misses      57110    57111       +1     
  Partials     2458     2458              

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