Update README.rst

Author: jeffswartz

README.rst

@@ -11,7 +11,7 @@ The OpenTok Python SDK lets you generate
 applications, and `archive <http://www.tokbox.com/platform/archiving>`_ Opentok 2.0 sessions.
 
 If you are updating from a previous version of this SDK, see
-`Important changes since v2.2.0 <#important-changes-since-v220>`_.
+`Important changes since v2.2.0`_.
 
 Installation using Pip (recommended):
 -------------------------------------