Apply suggestions from code review

Co-authored-by: Younes Belkada <49240599+younesbelkada@users.noreply.github.com>

src/peft/peft_model.py

@@ -176,7 +176,7 @@ def save_pretrained(
                 exist).
             safe_serialization (`bool`, *optional*):
                 Whether to save the adapter files in safetensors format, defaults to `True`.
-            selected_adapters (`list` of `str`,  *optional*):
+            selected_adapters (`List[str]`,  *optional*):
                 A list of adapters to be saved. If `None`, will default to all adapters.
             save_embedding_layers (`Union[bool, str]`, *optional*, defaults to `"auto"`):
                 If `True`, save the embedding layers in addition to adapter weights. If `auto`, checks the common

src/peft/tuners/tuners_utils.py

@@ -403,7 +403,7 @@ def set_adapter(self, adapter_names: str | list[str]) -> None:
         """Set the active adapter(s).
 
         Args:
-            adapter_name (`str` or `list[str]`): Name of the adapter(s) to be activated.
+            adapter_name (`str` or `List[str]`): Name of the adapter(s) to be activated.
         """
         if isinstance(adapter_names, str):
             adapter_names = [adapter_names]