test(cli): ignore flaky examples

[kt3k]

These examples depends on the internet (example.com) and flaky. I suggest we should ignore them in doc testing.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.11%. Comparing base (7e8c8d2) to head (e098bbc).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6882      +/-   ##
==========================================
- Coverage   94.11%   94.11%   -0.01%     
==========================================
  Files         581      581              
  Lines       42704    42704              
  Branches     6793     6793              
==========================================
- Hits        40190    40189       -1     
- Misses       2463     2464       +1     
  Partials       51       51              

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