Transformers cli clean command (#37657)

* transformers-cli -> transformers

* Chat command works with positional argument

* update doc references to transformers-cli

* doc headers

* deepspeed

---------

Co-authored-by: Joao Gante <joao@huggingface.co>

examples/flax/speech-recognition/run_flax_speech_recognition_seq2seq.py

@@ -99,7 +99,7 @@ class ModelArguments:
     use_auth_token: bool = field(
         default=False,
         metadata={
-            "help": "Will use the token generated when running `transformers-cli login` (necessary to use this script "
+            "help": "Will use the token generated when running `transformers login` (necessary to use this script "
             "with private models)."
         },
     )