docs: update DefinitionTooltip source code reference

[emmanuel-ferdman]

PR #13350 renamed the DefinitionTooltip source code file from DefinitionTooltip.js to DefinitionTooltip.tsx. This PR adjusts sources to changes.

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[emmanuel-ferdman]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.07%. Comparing base (b79ee0f) to head (acec820).
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #17456   +/-   ##
=======================================
  Coverage   77.07%   77.07%           
=======================================
  Files         409      409           
  Lines       14021    14021           
  Branches     4359     4307   -52     
=======================================
  Hits        10807    10807           
- Misses       3043     3044    +1     
+ Partials      171      170    -1     

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