Bump 'infotexture/prettier_xml_action' to v3.1.x
Bump 'infotexture/prettier_xml_action' to v3.1.x

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

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