Remove the section label markups for EDP

The EDP page was using :ref: instead of :doc: to refer to this
page.  The :ref: markups have been changed, so the specific section
labels are not needed.

Change-Id: I920f17b5124b86a05b204bf8f10970da70417762
Implements: blueprint docs-03
Merge "Remove the section label markups for EDP"