Revert nginx webdav config

nextcloud/rootfs/nginx/sites-enabled/nginx.conf

@@ -26,11 +26,11 @@ server {
         rewrite ^/.well-known/webfinger /public.php?service=webfinger last;
 
         location = /.well-known/carddav {
-            return 301 $scheme://$host:$server_port/remote.php/dav;
+            return 301 https://$host/remote.php/dav;
         }
 
         location = /.well-known/caldav {
-            return 301 $scheme://$host:$server_port/remote.php/dav;
+            return 301 https://$host/remote.php/dav;
         }
 
         location / {