Update feed URL for Graham Dumpleton.

Author: GrahamDumpleton

config/config.ini

@@ -504,7 +504,7 @@ name = Godson Gera
 [http://www.curiousvenn.com/?feed=rss2&cat=4]
 name = Graeme Cross
 
-[http://blog.dscpl.com.au/feeds/posts/default]
+[https://grahamdumpleton.me/feed.xml]
 name = Graham Dumpleton
 
 [https://www.grahamwheeler.com/categories/python.xml]