add https scheme to csrf trusted origin

Author: sophiebsw

ocfweb/settings.py

@@ -180,7 +180,7 @@ def __mod__(self, ref: Any) -> str:
 
     CSRF_COOKIE_SECURE = True
     CSRF_COOKIE_DOMAIN = os.getenv('OCFWEB_COOKIE_DOMAIN', 'www.ocf.berkeley.edu')
-    CSRF_TRUSTED_ORIGINS = [CSRF_COOKIE_DOMAIN]
+    CSRF_TRUSTED_ORIGINS = ["https://" + CSRF_COOKIE_DOMAIN]
     SESSION_COOKIE_SECURE = True
     SESSION_COOKIE_DOMAIN = CSRF_COOKIE_DOMAIN
 else: