Color tag syntax is not consistent with in-game use

[danswann]

Problem

The game uses ` for explicit color codes, e.g.: `Vvalue`
The same behavior on the wiki, inside an autocolor block, is achieved with %, e.g. %Vvalue%

Context

This decision was made largely because ` is reserved for inline code sections in Markdown. It is not easy to programmatically disambiguate whether someone is trying to do an inline code block or a sequence of colored text.