MensaplanPanel: Now using relative address to api b/c of deploy

src/panels/Mensaplan/MensaplanPanel.tsx

@@ -51,7 +51,7 @@ const MensaplanPanel = (props: {definition: MensaPanelDefinition}) => {
         }
 
         // Request the API
-        const request = await fetch(`https://infoscreen.oh14.de/canteen-menu/v3/canteens/${props.definition.canteenId}/${fetchFor}`);
+        const request = await fetch(`/canteen-menu/v3/canteens/${props.definition.canteenId}/${fetchFor}`);
 
         if (!(request.status === 200)) {
           menus.current = [];