On Splunkbase, the Markdown interpreter/compiler that is used to convert Apps' Details pages to HTML doesn't properly render Markdown code blocks. Specifically, it is converting HTML characters into their HTML entity formats.
For example, this text
Is rendered as the following on App Details pages
It doesn't appear to matter if you use single backticks, triple backticks, or four space indentation to delimit the code block. The same happens in all cases.
This is really annoying if you try to include segments of HTML or XML in the App documentation.