SPDX file with invalid documentNamespace value is flagged as valid by tools-java

[vargenau]

SPDX file contains:

  "documentNamespace" : "https//nokia.com",

(no ":" after https)

java-tools 1.1.8 says:

This SPDX Document is valid.

It should be flagged as invalid, it is not a valid URI.

tools-python say it is invalid.