Please call it Go, not golang. Golang is the domain name of the language's website, a useful hashtag, and an occasionally useful search term. It is not the name of the language should not be used as such. The language is Go, it should be called Go.
He explains in the article that he does this as a search differentiator.
That's why he did it, but it's not necessary. Google search can determine that a page is about the Go programming language without repeated use of "golang".