Public domain licenses do not meet tagging guidelines causing loading errors
cc @jordandc
Expected behaviour
All metadata written by BCMS must meet PMC style checker tagging rules for successful loading and display.
Current behaviour
Getting tagging error for public domain licenses written in chapter processed book metadata
Steps to reproduce
scientific-brief-re1.xml: STYLE ERROR.
The Creative Commons license URL does not point to a standard machine-readable Creative Commons license, please check for errors in the URL and/or extra terms (such as legalcode or deed.en) after the license version number. URL: https://creativecommons.org/public-domain/zero/1.0/ (Tagging Guidelines)
Priority
Y, for deployment