Don't indent TC candidate lists

The Sphinx directive '   *' generates a blockquote'd list which isn't
needed for TC elections as we don't need nested lists like we do for PTL
elections.

Switch to a std. ul

Change-Id: I999a2823d421b24e80aacf71af41475a26c9888d

doc/source/_exts/tc.jinja

@@ -2,5 +2,5 @@
 ======================
 
 {% for candidate in candidates['TC'] %}
-  * `{{ candidate['fullname'] }} ({{ candidate['ircname'] }}) <{{ candidate['url'] }}>`__
+* `{{ candidate['fullname'] }} ({{ candidate['ircname'] }}) <{{ candidate['url'] }}>`__
 {% endfor %}