Minor documentation fixes

Fix vague language around what
TC's git repositories contain; and
fix references to the
OpenInfra Board of Directors, and
the now-dissolved User Committee

Change-Id: I15c34541d16c432b41e4db52e73569a81ceeb889

reference/comparison-of-official-group-structures.rst

@@ -122,9 +122,9 @@ contributors to the open source project.
 It may delegate rights (and duties) to `TC working groups`_ (like the Election
 officials which have a delegation for running elections).
 
-The TC owns :doc:`git repositories (generally around governance documents)
-</reference/technical-committee-repos>` but does
-not produce OpenStack deliverables by itself.
+The TC owns :doc:`git repositories </reference/technical-committee-repos>`
+containing documentation and tooling pertaining to the governance of OpenStack
+but it does not produce OpenStack deliverables by itself.
 
 Board of Directors, Board committees and working groups
 =======================================================

reference/role-of-the-tc.rst

@@ -31,10 +31,8 @@ the `TC governance website`_ documents and other TC-maintained publications
 such as the `Project Team guide`_. See the list of
 :doc:`repositories maintained by the TC <technical-committee-repos>`.
 
-The TC is just one of the governance bodies more widely involved in
-OpenStack governance. An important part of its role is therefore to
-handle the relationships with other OpenStack governance bodies like
-the OSF Board of Directors, or the OpenStack User Committee.
+The TC is also responsible for handling the relationship with
+the Open Infra Foundation Board of Directors.
 
 Refining and applying the current OpenStack governance model
 ============================================================