[NRRPLT-0000] Addded xmlns to the prettifier ignore

* [NRRPLT-0000] Addded xmlns to the prettifier ignore

* [NRRPLT-0000] Fixed failing test

Approved-by: Axel von Arnim <axel.vonarnim@fortiss.org>
Approved-by: Eloy Retamino Carrion <ercarrion44@gmail.com>