Fix/finnish lang support

[greeho]

Description

Modified Finnish language texts according to native Finnish feedback

Specific Changes proposed

Updated /lang/fi.json

Requirements Checklist

• Feature implemented / Bug fixed
• If necessary, more likely in a feature request than a bug fix
  • Change has been verified in an actual browser (Chrome, Firefox, IE)
  • Unit Tests updated or fixed
  • Docs/guides updated
  • Example created (starter template on JSBin)
  • Has no DOM changes which impact accessiblilty or trigger warnings (e.g. Chrome issues tab)
  • Has no changes to JSDoc which cause npm run docs:api to error
• Reviewed by Two Core Contributors

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.31%. Comparing base (20f8d76) to head (631f7f1).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #9114      +/-   ##
==========================================
- Coverage   84.89%   84.31%   -0.58%     
==========================================
  Files         120      120              
  Lines        8154     8154              
  Branches     1964     1964              
==========================================
- Hits         6922     6875      -47     
- Misses       1232     1279      +47     

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