updated doc to reflect the changes made to wms-capabilities tool
updated doc to reflect the changes made to wms-capabilities tool

mapproxy/mapproxy,geoadmin/mapproxy,vrsource/mapproxy,faegi/mapproxy,mapproxy/mapproxy,Anderson0026/mapproxy,vrsource/mapproxy,camptocamp/mapproxy,olt/mapproxy,procrastinatio/mapproxy,kaiCu/mapproxy,faegi/mapproxy,geoadmin/mapproxy,procrastinatio/mapproxy,olt/mapproxy,Anderson0026/mapproxy,kaiCu/mapproxy,drnextgis/mapproxy,drnextgis/mapproxy,camptocamp/mapproxy