Update and vet dietzc's page

Author: ctrueden

_pages/people/dietzc.md

@@ -1,13 +1,11 @@
 ---
-mediawiki: User:Dietzc
-title: Christian Dietz
-
-name: Christian Dietz
+title: Christian Birkhold
+name: Christian Birkhold (Dietz)
 gravatar: 3eb1c779cb20412154b54bb8f7408436
-affiliation: University of Konstanz
+affiliation: KNIME GmbH
 forum: dietzc
 github: dietzc
-website: https://www.bison.uni-konstanz.de/mitglieder/christian-dietz/
+website: https://hub.knime.com/christian.birkhold
 ---
 
 Christian is the lead developer and maintainer of [KNIME Image Processing](http://knime.imagej.net).