published site resides in www subdomain

reasons: https://www.yes-www.org/

publishconf.py

@@ -10,7 +10,7 @@ sys.path.append(os.curdir)
 from pelicanconf import *
 
 # If your site is available via HTTPS, make sure SITEURL begins with https://
-SITEURL = 'https://schmittlau.ch'
+SITEURL = 'https://www.schmittlau.ch'
 RELATIVE_URLS = False
 
 FEED_ALL_ATOM = 'feeds/all.atom.xml'