Fix printout in make_cameras_from_configs (#796)

Signed-off-by: Yadunund <yadunund@gmail.com>
Co-authored-by: Steven Palma <imstevenpmwork@ieee.org>

lerobot/common/robot_devices/cameras/utils.py

@@ -31,7 +31,7 @@ def make_cameras_from_configs(camera_configs: dict[str, CameraConfig]) -> list[C
 
             cameras[key] = IntelRealSenseCamera(cfg)
         else:
-            raise ValueError(f"The motor type '{cfg.type}' is not valid.")
+            raise ValueError(f"The camera type '{cfg.type}' is not valid.")
 
     return cameras