Closes #25910: fix dead and permanently redirected links in the docs. Thanks to SilentGhost for the patch.
diff --git a/Doc/library/xml.rst b/Doc/library/xml.rst
index 0188219..0bcf581 100644
--- a/Doc/library/xml.rst
+++ b/Doc/library/xml.rst
@@ -62,7 +62,7 @@
billion laughs **Yes** **Yes** **Yes** **Yes** **Yes**
quadratic blowup **Yes** **Yes** **Yes** **Yes** **Yes**
external entity expansion **Yes** No (1) No (2) **Yes** No (3)
-DTD retrieval **Yes** No No **Yes** No
+`DTD`_ retrieval **Yes** No No **Yes** No
decompression bomb No No No No **Yes**
========================= ======== ========= ========= ======== =========
@@ -92,7 +92,7 @@
also point to external resources or local files. The XML
parser accesses the resource and embeds the content into the XML document.
-DTD retrieval
+`DTD`_ retrieval
Some XML libraries like Python's :mod:`xml.dom.pulldom` retrieve document type
definitions from remote or local locations. The feature has similar
implications as the external entity expansion issue.
@@ -128,6 +128,6 @@
.. _defusedxml: https://pypi.python.org/pypi/defusedxml/
.. _defusedexpat: https://pypi.python.org/pypi/defusedexpat/
-.. _Billion Laughs: http://en.wikipedia.org/wiki/Billion_laughs
-.. _ZIP bomb: http://en.wikipedia.org/wiki/Zip_bomb
-.. _DTD: http://en.wikipedia.org/wiki/Document_Type_Definition
+.. _Billion Laughs: https://en.wikipedia.org/wiki/Billion_laughs
+.. _ZIP bomb: https://en.wikipedia.org/wiki/Zip_bomb
+.. _DTD: https://en.wikipedia.org/wiki/Document_type_definition