remove unnecessary to_string in docs
@@ -328,7 +328,7 @@ impl Plot {
/// Plot::new("my_plot").view_aspect(2.0)
/// .label_formatter(|name, value| {
/// if !name.is_empty() {
- /// format!("{}: {:.*}%", name, 1, value.y).to_string()
+ /// format!("{}: {:.*}%", name, 1, value.y)
/// } else {
/// "".to_string()
/// }
