Update cli.py

Forgot to get value from enum class

Author: Asanto32

src/wristpy/core/cli.py

@@ -154,7 +154,7 @@ def main(
         epoch_length=epoch_length,
         nonwear_algorithm=nonwear_algorithms,  # type: ignore[arg-type] # Covered by NonwearAlgorithm Enum class
         verbosity=log_level,
-        output_filetype=output_filetype,  # type: ignore[arg-type] # Covered by OutputFileType Enum class
+        output_filetype=output_filetype.value,  # type: ignore[arg-type] # Covered by OutputFileType Enum class
     )