rename IsaacLabArenaEnvWrapper to IsaacLabEnvWrapper.

env.py

@@ -1,6 +1,6 @@
 import logging
 from typing import Any
-from lerobot.envs.isaaclab_arena import IsaacLabArenaEnvWrapper
+from lerobot.envs.isaaclab import IsaacLabEnvWrapper
 
 
 def make_env(n_envs: int = 1, use_async_envs: bool = False, **kwargs: Any):
@@ -29,7 +29,7 @@ def make_env(n_envs: int = 1, use_async_envs: bool = False, **kwargs: Any):
         config_path=config_path
     )
 
-    wrapped_env = IsaacLabArenaEnvWrapper(
+    wrapped_env = IsaacLabEnvWrapper(
         raw_env,
         episode_length=episode_length,
         task=task,