[x/blog] content: add go2-next-steps.article
[x/blog] content: add go2-next-steps.article

Change-Id: I697ab189ecf305f973072468e8b57f8315be28be
Reviewed-on: https://go-review.googlesource.com/c/blog/+/183921
Run-TryBot: Russ Cox <5ad239cb8a44f659eaaee0aa1ea5b94947abe557@golang.org>
TryBot-Result: Gobot Gobot <66cb808b70d30c07676d5e946fee83fd561249e5@golang.org>
Reviewed-by: Andrew Bonventre <682ad9f487f614f19e8b7cc5d340bdc8e1c1b128@golang.org>
X-Blog-Commit: 5b40331ba5ebddfd391c8387fc0ff32555b42ee6

golang/website,golang/website,golang/website,golang/website,golang/website,golang/website,golang/website