docs: change links from google.com to example.com

[kotoko]

There are sample links in documentation/code to present how link can be created. Currently they link to google.com. I suggest to change those to example.com. Domain was created by IANA with exactly this usage in mind - showing sample links in documentation.

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💖 Thanks for opening this pull request! 💖

Here is a list of things that will help get it across the finish line:

• Run yarn lint locally to catch formatting errors. This will fix some errors automatically, commit and push any changes.
• Run yarn test locally to catch errors. This ensures all components still behave as they should.
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• Include tests when adding/changing behavior.

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[codecov-commenter]

Codecov Report

Merging #4311 (16d9f08) into master (61a0873) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #4311   +/-   ##
=======================================
  Coverage   99.75%   99.75%           
=======================================
  Files         180      180           
  Lines        3241     3241           
=======================================
  Hits         3233     3233           
  Misses          8        8           

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[welcome]

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