[3.6] Fix typos in multiple `.rst` files (GH-1668) (#1702)

(cherry picked from commit 3378b2062c7fbb77a9b5e6d315d6b94160fac69a)
diff --git a/Doc/library/xml.dom.pulldom.rst b/Doc/library/xml.dom.pulldom.rst
index b502554..5c0f469 100644
--- a/Doc/library/xml.dom.pulldom.rst
+++ b/Doc/library/xml.dom.pulldom.rst
@@ -108,7 +108,7 @@
       :class:`xml.dom.minidom.Element` if event equals :data:`START_ELEMENT` or
       :data:`END_ELEMENT` or :class:`xml.dom.minidom.Text` if event equals
       :data:`CHARACTERS`.
-      The current node does not contain informations about its children, unless
+      The current node does not contain information about its children, unless
       :func:`expandNode` is called.
 
    .. method:: expandNode(node)