Update redirected link

Author: hugovk

peps/pep-0101.rst

@@ -639,7 +639,7 @@ permissions.
   The script will also sign any remaining files that were not
   signed with Sigstore until this point. Again, if this happens,
   do use your ``@python.org`` address for this process. More info:
-  https://www.python.org/download/sigstore/
+  https://www.python.org/downloads/metadata/sigstore/
 
 - In case the CDN already cached a version of the Downloads page
   without the files present, you can invalidate the cache using::