Errata: wrong default version number in RNG

Radu Coravu reported to DITA-OT that the wrong version number appears in the topicMod.rng file: https://github.com/dita-ot/dita-ot/issues/2705 It just needs to switch a default attribute value from 1.2 to 1.3.
The value is correct in the map RNG and in the DTDs.
Haven't checked the XSD.
Regards, Robert D. Anderson DITA-OT lead and Co-editor DITA 1.3 specification , Digital Services Group E-mail: 
Digital Services Group 11501 BURNET RD,, TX, 78758-3400, AUSTIN, USA