docs(style): output the style properties to style-props.rst (#5802)

examples/others/fragment/lv_example_fragment_1.c

@@ -23,7 +23,7 @@ static const lv_fragment_class_t sample_cls = {
     .constructor_cb = sample_fragment_ctor,
     .create_obj_cb = sample_fragment_create_obj,
     .instance_size = sizeof(struct sample_fragment_t),
-};
+    };
 
 void lv_example_fragment_1(void)
 {