Update .env.example

Added STATIC_ROOT=static/ to .env.example file.

This change is necessary to ensure that the static files, such as CSS, load correctly in both logged-in and logged-out states. Previously, the lack of this configuration could lead to missing or broken CSS, affecting the website's usability.

.env.example

@@ -21,6 +21,7 @@ DEFAULT_LANGUAGE="English"
 # Probably only necessary in development.
 # PORT=1333
 
+STATIC_ROOT=static/
 MEDIA_ROOT=images/
 
 # Database configuration