[OSGeoLive] #2222: Update the saga Quickstart

[OSGeoLive]

#2222: Update the saga Quickstart
---------------------------+---------------------------
 Reporter:  flicstar       |      Owner:  osgeolive@…
     Type:  defect         |     Status:  new
 Priority:  normal         |  Milestone:  OSGeoLive14.0
Component:  Documentation  |   Keywords:  Quickstart
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 The saga Quickstart was reviewed by @flicstar as part of the Google Season
 of Docs in October 2019.

 It scored 3.5 out of possible 4. It requires only minor changes.

 Please see comments in GitHub on this PR: ​https://github.com/OSGeo
 /OSGeoLive-doc/pull/556

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Ticket URL: <https://trac.osgeo.org/osgeolive/ticket/2222>
OSGeoLive <http://live.osgeo.org/>
self-contained bootable DVD, USB thumb drive or Virtual Machine based on Lubuntu, that allows you to try a wide variety of open source geospatial software without installing anything.