Official plaintext versions of the Creative Commons licenses are available. Are there similarly official Markdown versions?
Many licenses require that the licensed work is accompanies by a copy of the license, e.g. GPL, MIT, BSD, GFDL, …. A Markdown version that can be copied into the project documentation can then be helpful.
However, the CC licenses can be satisfied by linking to the full terms, or even only mentioning the abbreviated name for the license (like CC-BY-SA 3.0). A Markdown version that can be copied into projects is therefore not as necessary, and is not provided.