[MacPorts] #24897: document test.dir in guide

[MacPorts]

#24897: document test.dir in guide
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  Reporter:  ryandesign@…  |      Owner:  macports-tickets@…
      Type:  defect        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  guide         |    Version:
Resolution:                |   Keywords:
      Port:                |
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Changes (by mf2k@…):

 * owner:  markd@… => macports-tickets@…


Comment:

 markd has retired. See #44782.

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Ticket URL: <https://trac.macports.org/ticket/24897#comment:1>
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