Docs: Fix broken links in documentation files

Signed-off-by: Awadhy Mohammed <awadhy.mohammed@arm.com>
Change-Id: I29906e6e212f285fc33825689a349fd790ddddea
diff --git a/docs/contributing/doc_guidelines.rst b/docs/contributing/doc_guidelines.rst
index b466a58..b1a2db6 100644
--- a/docs/contributing/doc_guidelines.rst
+++ b/docs/contributing/doc_guidelines.rst
@@ -276,8 +276,8 @@
 
 .. _Sphinx: https://www.sphinx-doc.org/en/master/
 .. _Restructed Text: https://docutils.sourceforge.io/rst.html
-.. _Python Documentation Guidelines: https://devguide.python.org/documenting/#style-guide
-.. _Pygments Lexers: https://pygments.org/lexers/
+.. _Python Documentation Guidelines: https://devguide.python.org/documentation/style-guide/
+.. _Pygments Lexers: https://pygments.org/docs/api/#lexers
 
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