fix: missing comma (#2200)

docs/conf.py

@@ -83,7 +83,7 @@
 # Set some default to avoid unnecessary repetitious directives.
 autodoc_default_options = {
     "exclude-members": (
-        "__repr__, __weakref__, __metaclass__, __init__, __format__,  __new__, __str__, __dir__"
+        "__repr__, __weakref__, __metaclass__, __init__, __format__,  __new__, __str__, __dir__,"
         "model_config, model_fields, model_post_init, model_computed_fields,"
         "__ape_extra_attributes__,"
     )