SNOW-1895435- Expand the documentation - signing verification

[sfc-gh-pmotacki]

Description

Please explain the changes you made here.

Checklist

• Format code according to the existing code style (run npm run lint:check -- CHANGED_FILES and fix problems in changed code)
• Create tests which fail without the change (if possible)
• Make all tests (unit and integration) pass (npm run test:unit and npm run test:integration)
• Extend the types in index.d.ts file (if necessary)
• Extend the README / documentation and ensure is properly displayed (if necessary)
• Provide JIRA issue id (if possible) or GitHub issue id in commit message

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.96%. Comparing base (67d0c25) to head (1a5089a).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #997      +/-   ##
==========================================
- Coverage   88.97%   88.96%   -0.02%     
==========================================
  Files          72       72              
  Lines        6985     6985              
==========================================
- Hits         6215     6214       -1     
- Misses        770      771       +1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.