Fix link text to work around dita-ot/dita-ot#4017
Fix link text to work around dita-ot/dita-ot#4017

https://github.com/dita-ot/dita-ot/issues/4017
Signed-off-by: Roger Sheen <a61a1add71dadc74037ae5e44ee30713db9a7451@infotexture.net>

dita-ot/docs