[MacPorts] #53432: MPBB: documentation update re git required

[MacPorts]

#53432: MPBB: documentation update re git required
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 Reporter:  mkae         |      Owner:
     Type:  enhancement  |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  ports        |    Version:
 Keywords:               |       Port:  mpbb
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 MPBB's [https://github.com/macports/mpbb/blob/master/README.md README.md]
 still refers to SVN.

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Ticket URL: <https://trac.macports.org/ticket/53432>
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