I just moved the topic to the .NET SDK sub category, that should be good.
I manage the docs repo which contains all the guides but the API references are maintained independently by each SDK & Parse Server. Each of these repos has a gh-pages branch which contains the API reference which you can then see on docs.parseplatform.org. The api reference should be published automatically by Travis CI but on the .NET SDK it seems it is not working - generally happens due to permission changes - giving Travis a new GitHub token will hopefully fix this.
Currently we have a policy of the guides referring to latest version of the respective SDK. Ideally PRs are made to update the guides well before releases are made to give me & others time to review them, but this is only really important for the more high traffic SDKs & guides.
We could definitely combine the guides, if you or Alex can make a PR to address the content changes I can help with removing the old ones.