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>

docs/source/zh/contributing.md

@@ -63,7 +63,7 @@ limitations under the License.
 想要自动获取操作系统和软件版本，请运行以下命令：
 
 ```bash
-transformers-cli env
+transformers env
 ```
 
 你也可以从代码仓库的根目录下运行相同的命令：