FAB-5840 align maintainers sect with charter

Change-Id: Ibcebc55ac14ddd6bd510adb46f8039c980b6dce1
Signed-off-by: Christopher Ferris <chrisfer@us.ibm.com>

docs/source/CONTRIBUTING.rst

@@ -247,15 +247,13 @@ designate an initial set of maintainers that will be approved by the
 top-level project's existing maintainers when the project is first
 approved. The project's maintainers will, from time-to-time, consider
 adding or removing a maintainer. An existing maintainer can submit a
-change set to the :doc:`MAINTAINERS.rst <MAINTAINERS>` file. If there are
-less than eight maintainers, a majority of the existing maintainers on
-that project are required to merge the change set. If there are more
-than eight existing maintainers, then if five or more of the maintainers
-concur with the proposal, the change set is then merged and the
-individual is added to (or alternatively, removed from) the maintainers
-group. explicit resignation, some infraction of the `code of
-conduct <https://wiki.hyperledger.org/community/hyperledger-project-code-of-conduct>`__
-or consistently demonstrating poor judgement.
+change set to the :doc:`MAINTAINERS.rst <MAINTAINERS>` file. A nominated
+Contributor may become a Maintainer by a majority approval of the proposal
+by the existing Maintainers. Once approved, the change set is then merged
+and the individual is added to (or alternatively, removed from) the maintainers
+group. Maintainers may be removed by explicit resignation, or for some
+infraction of the `code of conduct <https://wiki.hyperledger.org/community/hyperledger-project-code-of-conduct>`__
+or by consistently demonstrating poor judgement.
 
 Legal stuff
 -----------