update doc for jpegs new in 5.8.0
update doc for jpegs new in 5.8.0

pimms/DeepCL,mrgloom/DeepCL,pimms/DeepCL,hughperkins/DeepCL,Peilong/DeepCL,Peilong/DeepCL,mrgloom/DeepCL,MiniLight/DeepCL,pimms/DeepCL,MiniLight/DeepCL,FighterLYL/DeepCL,hughperkins/DeepCL,pimms/DeepCL,MiniLight/DeepCL,FighterLYL/DeepCL,FighterLYL/DeepCL,pimms/DeepCL,hughperkins/DeepCL,mrgloom/DeepCL,mrgloom/DeepCL,mrgloom/DeepCL,MiniLight/DeepCL,hughperkins/DeepCL,Peilong/DeepCL,hughperkins/DeepCL,Peilong/DeepCL,FighterLYL/DeepCL,MiniLight/DeepCL,FighterLYL/DeepCL,Peilong/DeepCL