Fix docbot config & add caution

Author: jim-parry

admin/docbot

@@ -1,8 +1,14 @@
 #!/bin/bash
 
-# Rebuild and deploy CodeIgniter4 user guide
+# Rebuild and deploy CodeIgniter4 under-development user guide
+#
+# This is a quick way to test user guide changes, and if they
+# look good, to push them to the gh-pages branch of the
+# development repository.
+#
+# This is not meant for updating the "stable" user guide.
 
-. config
+UPSTREAM=https://github.com/bcit-ci/CodeIgniter4.git
 
 # Prepare the nested repo clone folder
 cd user_guide_src