[MacPorts] #60140: alpine @2.21: update URL

[MacPorts]

#60140: alpine @2.21: update URL
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  Reporter:  FranklinYu   |      Owner:  jcvernaleo
      Type:  enhancement  |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:  alpine       |
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Comment (by jcvernaleo):

 Great, thanks for catching that.  I'll do a PR with the updated
 homepage/code and the latest release.

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Ticket URL: <https://trac.macports.org/ticket/60140#comment:2>
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