[doc] Minor update to coding style guide.
[doc] Minor update to coding style guide.

wfpokorny/povray,wfpokorny/povray,c-lipka/povray,c-lipka/povray,POV-Ray/povray,LeForgeron/povray,wfpokorny/povray,wfpokorny/povray,LeForgeron/povray,POV-Ray/povray,wfpokorny/povray,LeForgeron/povray,POV-Ray/povray,LeForgeron/povray,POV-Ray/povray,POV-Ray/povray,wfpokorny/povray,POV-Ray/povray,LeForgeron/povray,LeForgeron/povray,wfpokorny/povray,c-lipka/povray,LeForgeron/povray,LeForgeron/povray,c-lipka/povray,POV-Ray/povray