Fix character reference for unordered lists: & → *
Fix character reference for unordered lists: & → *

https://github.com/dita-ot/docs/issues/292#issuecomment-646957471

Signed-off-by: Roger Sheen <a61a1add71dadc74037ae5e44ee30713db9a7451@infotexture.net>

infotexture/docs,infotexture/docs,dita-ot/docs