Update myst.yml

Author: jukent

myst.yml

@@ -8,7 +8,7 @@ project:
   # description:
   keywords: []
   authors: []
-  github: https://github.com/projectpythia-mystmd/projectpythia-mystmd.github.io
+  github: https://github.com/projectpythia/projectpythia.github.io
   # bibliography: []
 
   toc: