[OSGeoLive] Major typo in OSGeoLive docs (says version 12.0 instead of 13.0)

[Cameron Shorter]

I've just noticed that our docs says version 12.0 instead of 13.0 in the 
heading on:
https://live.osgeo.org/en/index.html
https://live.osgeo.org/en/overview/overview.html

But correctly says 13.0 on:
https://live.osgeo.org/en/metrics.html

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I've created ticket: https://trac.osgeo.org/osgeolive/ticket/2185

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Cameron Shorter
Technology Demystifier
Open Technologies and Geospatial Consultant

M +61 (0) 419 142 254