Use autodoc_member_order = 'bysource'

This is for making the variables appear in settings.py
to appear in the document in the same order.

docs/source/conf.py

@@ -256,4 +256,5 @@ todo_include_todos = False
 
 # -- Options for autodoc module ------------------------------------------------
 
+autodoc_member_order = 'bysource'
 autodoc_default_flags = ['members', 'undoc-members']