Reformatted CLI examples in docs

[simonw]

Refs:

• Make as many examples in the CLI docs as possible copy-and-pastable #551

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📚 Documentation preview 📚: https://sqlite-utils--553.org.readthedocs.build/en/553/

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (e240133) 96.36% compared to head (0b81794) 96.36%.

❗ Current head 0b81794 differs from pull request most recent head 21036a5. Consider uploading reports for the commit 21036a5 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #553   +/-   ##
=======================================
  Coverage   96.36%   96.36%           
=======================================
  Files           6        6           
  Lines        2726     2726           
=======================================
  Hits         2627     2627           
  Misses         99       99           

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[simonw]

If https://sqlite-utils--553.org.readthedocs.build/en/553/cli.html#running-sql-queries looks good I can merge this.