Fix type in mapfish-print-v3 externs
Fix type in mapfish-print-v3 externs

balpreetspankaj/ngeo,Jenselme/ngeo,camptocamp/ngeo,pgiraud/ngeo,pgiraud/ngeo,adube/ngeo,camptocamp/ngeo,camptocamp/ngeo,ger-benjamin/ngeo,kalbermattenm/ngeo,camptocamp/ngeo,Jenselme/ngeo,ger-benjamin/ngeo,Jenselme/ngeo,adube/ngeo,adube/ngeo,mygu/ngeo,adube/ngeo,camptocamp/ngeo,mygu/ngeo,ger-benjamin/ngeo,pgiraud/ngeo,balpreetspankaj/ngeo,balpreetspankaj/ngeo,kalbermattenm/ngeo,mygu/ngeo,Jenselme/ngeo,kalbermattenm/ngeo