[tor-bugs] #30720 [Core Tor/Chutney]: Use test-network.sh for the examples in Chutney's README

[Tor Bug Tracker & Wiki]

#30720: Use test-network.sh for the examples in Chutney's README
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     Reporter:  teor              |      Owner:  (none)
         Type:  defect            |     Status:  new
     Priority:  Medium            |  Milestone:
    Component:  Core Tor/Chutney  |    Version:
     Severity:  Normal            |   Keywords:  doc, easy
Actual Points:                    |  Parent ID:
       Points:                    |   Reviewer:
      Sponsor:                    |
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 Chutney's README is confusing, because we provide examples that assume you
 have already started a chutney network.

 Instead, we should provide test-network.sh command lines.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30720>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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