Fix the link to the "guides website"

This change fixes the link to the guide website.

README.md

@@ -18,7 +18,7 @@ Guide articles can be an explanation of a syntax, design pattern, what aria labe
 ## What can I write an article about?
 We welcome your help writing these articles. You don't have to be an expert in a topic to write about it - this entire guide is open source, so even if you make a mistake, another contributor will eventually correct it.
 
-To help, find a `stub article` on our [guides website](guide.netlify.com), write the article, then open a pull request (PR) to replace the stub with your article.
+To help, find a `stub article` on our [guides website](http://guide.netlify.com/), write the article, then open a pull request (PR) to replace the stub with your article.
 
 If you can't find a stub about the topic you'd like to write about, you can open a PR that creates the stub and includes your draft article. Feel free to ask us questions if you're not sure where to put a new article in the directory structure.