Consistency check for versionadded/changed directives.
diff --git a/Doc/library/collections.rst b/Doc/library/collections.rst
index 66d373d..454817b 100644
--- a/Doc/library/collections.rst
+++ b/Doc/library/collections.rst
@@ -266,6 +266,7 @@
 
       .. versionadded:: 3.2
 
+
    .. method:: extend(iterable)
 
       Extend the right side of the deque by appending elements from the iterable
@@ -296,12 +297,14 @@
       Removed the first occurrence of *value*.  If not found, raises a
       :exc:`ValueError`.
 
+
    .. method:: reverse()
 
       Reverse the elements of the deque in-place and then return ``None``.
 
       .. versionadded:: 3.2
 
+
    .. method:: rotate(n)
 
       Rotate the deque *n* steps to the right.  If *n* is negative, rotate to
@@ -576,7 +579,7 @@
    lightweight and require no more memory than regular tuples.
 
    .. versionchanged:: 3.1
-      added support for *rename*.
+      Added support for *rename*.
 
 Example: