Clarify management of feature flags
Fix
Feature Flags
=============
-Read the Docs offers some additional flag settings which can be only be configured by the site admin.
-These are optional settings and you might not need it for every project.
-By default, these flags are disabled for every project.
-A separate request can be made by `contacting us via email`_ to enable
-or disable one or more of these featured flags for a particular project.
+Read the Docs offers some additional flag settings
+which are disabled by default for every project
+and can only be enabled by `contacting us via email`_
+or the admininstrator of your service.
.. _contacting us via email: mailto:support@readthedocs.org
