[MacPorts] #64740: graphviz wrong link in man1

[MacPorts]

#64740: graphviz wrong link in man1
--------------------+----------------------
 Reporter:  pdvnl   |      Owner:  (none)
     Type:  defect  |     Status:  new
 Priority:  Low     |  Milestone:
Component:  ports   |    Version:  2.7.1
 Keywords:          |       Port:  graphviz
--------------------+----------------------
 {{{
 ls -l /opt/local/share/man/man1/dot2gxl.1
 lrwxr-xr-x  1 root  admin  8 Dec 26 00:45
 /opt/local/share/man/man1/dot2gxl.1 -> gv2gxl.1
 }}}

 should be

 {{{
 gv2gxl.1.gz
 }}}

 this causes a warning in makewhatis.

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Ticket URL: <https://trac.macports.org/ticket/64740>
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