Fix punctuation.
diff --git a/Doc/library/xml.etree.elementtree.rst b/Doc/library/xml.etree.elementtree.rst
index 9aa1ea3..38545c2 100644
--- a/Doc/library/xml.etree.elementtree.rst
+++ b/Doc/library/xml.etree.elementtree.rst
@@ -529,5 +529,5 @@
 .. [#] The encoding string included in XML output should conform to the
    appropriate standards. For example, "UTF-8" is valid, but "UTF8" is
    not. See http://www.w3.org/TR/2006/REC-xml11-20060816/#NT-EncodingDecl
-   and http://www.iana.org/assignments/character-sets .
+   and http://www.iana.org/assignments/character-sets.