[pdal] minor doc edit

[Newcomb, Doug]

Hi folks,
In
https://github.com/PDAL/PDAL/blob/master/doc/stages/filters.programmable.txt

"The XML pipeline file referenced the external `multiply_z.pl` `Python`_
script,",

I'm guessing it should be

"The XML pipeline file referenced the external `multiply_z.py` `Python`_
script,"

Doug


Doug Newcomb
USFWS
Raleigh, NC
919-856-4520 ext. 14 doug_newcomb at fws.gov
---------------------------------------------------------------------------------------------------------
The opinions I express are my own and are not representative of the
official policy of the U.S.Fish and Wildlife Service or Dept. of the
Interior.   Life is too short for undocumented, proprietary data formats.
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