Here is an example of EIA.gov, a website publishing data available for re-use. They are saying the same thing you are looking for, but in a more "legalese" way as FumbleFingers mentioned:
U.S. government publications are in the public domain and are not
subject to copyright protection. You may use and/or distribute any of
our data, files, databases, reports, graphs, charts, and other
information products that are on our website or that you receive
through our email distribution service. However, if you use or
reproduce any of our information products, you should use an
acknowledgment, which includes the publication date, such as: "Source:
U.S. Energy Information Administration (Oct 2008).
In your case I would say "Distribution or re-use of this article is welcomed. Please acknowledge the author and source, e.g. [Insert your article source here]"