feat(invoices): use different wording for quotes

[nijel]

Proposed changes

Checklist

• Lint and unit tests pass locally with my changes.
• I have added tests that prove my fix is effective or that my feature works.
• I have added documentation to describe my feature.
• I have squashed my commits into logic units.
• I have described the changes in the commit messages.

Other information

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.53%. Comparing base (16edbb0) to head (a24666c).
Report is 1 commits behind head on main.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2259      +/-   ##
==========================================
+ Coverage   82.52%   82.53%   +0.01%     
==========================================
  Files          35       35              
  Lines        3753     3756       +3     
  Branches      343      343              
==========================================
+ Hits         3097     3100       +3     
  Misses        526      526              
  Partials      130      130