Update PSF blog entry to HTTPS (#607)

Author: malemburg

config/config.ini

@@ -1164,7 +1164,7 @@ name = Python Piedmont Triad User Group
 [https://www.pythonpool.com/feed/]
 name = Python Pool
 
-[http://pyfound.blogspot.com/atom.xml]
+[https://pyfound.blogspot.com/atom.xml]
 name = Python Software Foundation
 
 [https://sweetness.hmmz.org/feeds/python.rss.xml]