Update for supported_formats
Update for supported_formats

The docs say supported_format, but the code says supported_formats
faegi/mapproxy,Anderson0026/mapproxy,Anderson0026/mapproxy,mapproxy/mapproxy,vrsource/mapproxy,kaiCu/mapproxy,drnextgis/mapproxy,vrsource/mapproxy,kaiCu/mapproxy,geoadmin/mapproxy,procrastinatio/mapproxy,olt/mapproxy,drnextgis/mapproxy,camptocamp/mapproxy,geoadmin/mapproxy,faegi/mapproxy,mapproxy/mapproxy,olt/mapproxy,procrastinatio/mapproxy,camptocamp/mapproxy