[MacPorts] #70152: vnc @4.1.3 misleading description

[MacPorts]

#70152: vnc @4.1.3 misleading description
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  Reporter:  ianroberts  |      Owner:  (none)
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:
      Port:  vnc         |
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Comment (by ianroberts):

 `x0vncserver` is not a virtual X server, it's a tool that talks to another
 X server in a tight polling loop and "echoes" what it sees to VNC clients.
 It requires that you already have another X server running somewhere else
 which is what your X windows applications display on.

 (The background here is that there's an issue in the XQuartz X11 server
 for Mac - https://github.com/XQuartz/XQuartz/issues/31 - whereby the
 window backgrounds go completely black and unreadable when running on
 Apple Silicon.  I thought a workaround might be if I could get the typical
 Linux-style `Xvnc` virtual X server running, then connect to that using
 the built-in Mac VNC client, and the port description made it appear this
 would be possible with MacPorts).

 I'll see if I can come up with better wording for the portfile.

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Ticket URL: <https://trac.macports.org/ticket/70152#comment:2>
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