Only few RTDs in DCAE contain a label in the header of the file.

e.g. in https://git.onap.org/dcaegen2/tree/docs/sections/architecture.rst:

.. _architecture:

This label allows other documents (e.g. in Doc: Service Design) to create links to a specific document (e.g. DCAE-MOD User Guide)

Unortunately not all RTDs in DCAEGEN2 have a unique link.
Therefor I would like them to be added.