Link in Markdown README gives empty URL

Issue #5869 duplicate
Aluísio Augusto Silva Gonçalves
created an issue

Linking to https://commons.wikimedia.org/wiki/File:Chromium_11_Logo.svg from a Markdown README yields an empty URL (<a href="">) when rendering on the website. Rendering the same file at the Markdown Web Dingus yields the expected result.

See this file for an example.