downloads rest api - 404 on checksum url/ signature urls

From https://downloads.mariadb.org/rest-api/mariadb/10.2/

navigate to a file.

The checksum/signature urls are like

https://downloads.mariadb.org/rest-api/mariadb/10.2.31/mariadb-10.2.31-linux-i686.tar.gz/checksum/

this doesn't exist.