changed positional parameters to named parameters like in docs (#6905)

Co-authored-by: Patryk Bartkowiak <patryk.bartkowiak@tcl.com>
Co-authored-by: Linoy Tsaban <57615435+linoytsaban@users.noreply.github.com>

scripts/convert_diffusers_sdxl_lora_to_webui.py

@@ -39,14 +39,15 @@ def convert_and_save(input_lora, output_lora=None):
 if __name__ == "__main__":
     parser = argparse.ArgumentParser(description="Convert LoRA model to PEFT and then to Kohya format.")
     parser.add_argument(
-        "input_lora",
+        "--input_lora",
         type=str,
+        required=True,
         help="Path to the input LoRA model file in the diffusers format.",
     )
     parser.add_argument(
-        "output_lora",
+        "--output_lora",
         type=str,
-        nargs="?",
+        required=False,
         help="Path for the converted LoRA (safetensors format for AUTOMATIC1111, ComfyUI, etc.). Optional, defaults to input name with a _webui suffix.",
     )