Fix syntax for versionchanged markup.
diff --git a/Doc/library/csv.rst b/Doc/library/csv.rst
index 1be909b..a46c7ba 100644
--- a/Doc/library/csv.rst
+++ b/Doc/library/csv.rst
@@ -128,10 +128,9 @@
is not a registered dialect name.
.. versionchanged:: 2.5
-
- This function now returns an immutable :class:`Dialect`. Previously an
- instance of the requested dialect was returned. Users could modify the
- underlying class, changing the behavior of active readers and writers.
+ This function now returns an immutable :class:`Dialect`. Previously an
+ instance of the requested dialect was returned. Users could modify the
+ underlying class, changing the behavior of active readers and writers.
.. function:: list_dialects()