Add my blog (Christian Ledermann) (#558)

Rss feed was checked for validity
Feed is python specific and in english

Author: cleder

config/config.ini

@@ -252,6 +252,9 @@ name = Chris Warrick
 [http://lipyrary.blogspot.com/feeds/posts/default]
 name = Christian Heimes
 
+[https://dev.to/feed/ldrscke.rss]
+name = Christian Ledermann
+
 [http://feeds.feedburner.com/mrtopf-python]
 name = Christian Scholz
 
@@ -1640,4 +1643,3 @@ name = Éric Araujo
 
 [https://lukasz.langa.pl/python/atom.xml]
 name = Łukasz Langa
-