style: add trailing commas in ColumnType match arms

src/modes/list.rs

@@ -141,10 +141,10 @@ pub fn mode_list(
                 },
                 ColumnType::Compression => {
                     Cell::new(&string_column(item.compression.to_string(), column_width))
-                }
+                },
                 ColumnType::DigestType => {
                     Cell::new(&string_column(item.digest_type.to_string(), column_width))
-                }
+                },
                 ColumnType::DigestValue => {
                     match item.digest_value {
                         Some(ref value) => Cell::new(&string_column(value.to_string(), column_width)),
@@ -152,7 +152,7 @@ pub fn mode_list(
                             .with_style(Attr::ForegroundColor(color::RED))
                             .with_style(Attr::Bold),
                     }
-                }
+                },
                 ColumnType::FileSize => match item_path.metadata() {
                     Ok(metadata) => Cell::new_align(
                         &size_column(