[wp-trac] [WordPress Trac] #59624: Update to readme to add pass params instuctions

[WordPress Trac]

#59624: Update to readme to add pass params instuctions
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 Reporter:  pbearne           |      Owner:  (none)
     Type:  defect (bug)      |     Status:  new
 Priority:  normal            |  Milestone:  Awaiting Review
Component:  Build/Test Tools  |    Version:
 Severity:  normal            |   Keywords:
  Focuses:                    |
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 I always have to work this out / look it up so let's add it to the readme

 You can pass extra params into the php tests by adding -- and then the
 [param options](https://docs.phpunit.de/en/10.4/textui.html#command-line-
 options)

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Ticket URL: <https://core.trac.wordpress.org/ticket/59624>
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