Fix syntax to support docs parser and MD.
* `buttonLabel` String (optional) - Custom label for the confirmation button, when
left empty the default label will be used.
* `filters` [FileFilter[]](structrs/file-filter.md) (optional)
- * `properties` `String[]` (optional) - Contains which features the dialog should use, can
+ * `properties` String[] - (optional) - Contains which features the dialog should use, can
contain `openFile`, `openDirectory`, `multiSelections`, `createDirectory`
and `showHiddenFiles`.
* `callback` Function (optional)