Update LanguageCodes.php
Update LanguageCodes.php

Change nativeName for Russian language.
tomzx/blog.tomrochette.com,toovy/grav,getgrav/grav,Vivalldi/grav,ccardinaux/grav-test,JamesPan/gravbox,JamesPan/gravbox,Vivalldi/grav,tcsizmadia/grav,shortsofia/testesitegrav.github.io,TheHiddenHaku/alessiobottiroli-website-grav,sylvestrelucia/grav,joeyhenricks/a-broke-vegan,JamesPan/gravbox,Pumpapa/lucaswalters.nl,tomzx/blog.tomrochette.com,toovy/grav,sylvestrelucia/grav,Pumpapa/chriswalters.nl,Pumpapa/jacinthawalters.nl,dimayakovlev/grav,lennerd/grav,sylvestrelucia/grav,stell/grav,userfrosting/learn,webuxr/iamrs,joeyhenricks/a-broke-vegan,beacloudgenius/grav,iMoonThailand/grav,JamesPan/gravbox,userfrosting/learn,jeffam/grav,Pumpapa/lucaswalters.nl,notklaatu/grav,getgrav/grav,dimayakovlev/grav,Pumpapa/lucaswalters.nl,tomzx/blog.tomrochette.com,userfrosting/learn,Silwereth/grav,jinxboy13/grav,tomzx/blog.tomrochette.com,sylvestrelucia/grav,gigago/grav,Sommerregen/grav,userfrosting/learn,undesign/undesign.github.io,undesign/undesign.github.io,notklaatu/grav