typo: update error link in App.ts

[ChinoUkaegbu]

Summary

Fixes #2257

Requirements

• I've read and understood the Contributing Guidelines and have done my best effort to follow them.
• I've read and agree to the Code of Conduct.

[filmaj]

Thank you!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.78%. Comparing base (87d75c5) to head (9aedac7).
Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2260   +/-   ##
=======================================
  Coverage   87.78%   87.78%           
=======================================
  Files          19       19           
  Lines        1646     1646           
  Branches      464      464           
=======================================
  Hits         1445     1445           
  Misses        194      194           
  Partials        7        7           

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