fix description

src/main.rs

@@ -138,7 +138,7 @@ struct CreateAssetMediasSubcommand{
 	#[arg(long,group="api_key",required=true)]
 	api_key_file:Option<PathBuf>,
 	#[arg(long)]
-	asset_type:AssetType,
+	description:Option<String>,
 	#[arg(long,group="creator",required=true)]
 	creator_user_id:Option<u64>,
 	#[arg(long,group="creator",required=true)]
@@ -456,6 +456,7 @@ async fn main()->AResult<()>{
 				(None,Some(group_id))=>rbx_asset::cloud::Creator::groupId(group_id.to_string()),
 				other=>Err(anyhow!("Invalid creator {other:?}"))?,
 			},
+			description:subcommand.description.unwrap_or_else(||String::with_capacity(0)),
 			input_files:subcommand.input_files,
 			expected_price:subcommand.expected_price,
 		}).await,