Most of the code in c++ doc section are old and kind of objective-c conversion to c++.
Is there any way i can contribute to the docs and update the existing codes to V3 compatible alongside those v2 codes ?
Our new tutorials is in Github now you can contribute in this repo: https://github.com/cocos2d/cocos-docs
Before you pull request, you should read Contribution Guide: https://github.com/cocos2d/cocos-docs/blob/master/manual/framework/native/best-practice/cocos-docs-style/en.md
if the PR is merged, you will see your tutorial is shown in following page after 2 hours automatically: http://www.cocos2d-x.org/docs/README