When building docs if a single candidate runs for PTL of multiple projects
sphinx will generate warnings like:
.../openstack/election/doc/source/ocata/ptl.rst:3: WARNING: Duplicate explicit target name: "tony breeds (tonyb)".
.../openstack/election/doc/source/ocata/ptl.rst:3: WARNING: Duplicate explicit target name: "tony breeds (tonyb)".
.../openstack/election/doc/source/ocata/ptl.rst:3: WARNING: Duplicate explicit target name: "tony breeds (tonyb)".
Make the candidate links anonymous to avoid those warnings.
Even though it can't be a problem for the TC make those links anonymous for
consistency
Change-Id: I5a812db7f9ac1438b79db0cd8c77f8850c1922bf
faca18b891