Fix rst syntax error which prevented Sphinx docs from building.

CHANGES.txt

@@ -17,7 +17,7 @@ Bug Fixes
 - When registering a view configuration that named a Chameleon ZPT renderer
   with a macro name in it (e.g. ``renderer='some/template#somemacro.pt``) as
   well as a view configuration without a macro name it it that pointed to the
-  same template (e.g. ``renderer='some/template.pt'), internal caching could
+  same template (e.g. ``renderer='some/template.pt'``), internal caching could
   confuse the two, and your code might have rendered one instead of the
   other.