minor doc fix
minor doc fix

mwengren/pycsw,kevinpdavies/pycsw,kevinpdavies/pycsw,benhowell/pycsw,mwengren/pycsw,ocefpaf/pycsw,kalxas/pycsw,geopython/pycsw,rouault/pycsw,bukun/pycsw,tomkralidis/pycsw,ricardogsilva/pycsw,benhowell/pycsw,kalxas/pycsw,rouault/pycsw,ingenieroariel/pycsw,ricardogsilva/pycsw,geopython/pycsw,bukun/pycsw,geopython/pycsw,ckan-fcd/pycsw-fcd,bukun/pycsw,ckan-fcd/pycsw-fcd,kalxas/pycsw,ocefpaf/pycsw,PublicaMundi/pycsw,tomkralidis/pycsw,PublicaMundi/pycsw,tomkralidis/pycsw,ricardogsilva/pycsw,ingenieroariel/pycsw