Add BCP references to the normative section

[philippederyck]

Adding BCP references by including the items below in the list of normative references breaks the build.

-  BCP14:
-  BCP212:

Tasks to solve this issue

• [ ] Add the references in the normative section the right way
• [ ] Re-add the references in the text (search for BCP14/BCP212 and add a reference)