Mention to_string()

Author: ChayimFriedman2

src/language/strings.md

@@ -162,6 +162,10 @@ let person = Person {
 println!("{person}");
 ```
 
+For converting values to string using `Display` without formatting, you can use
+the `std::string::ToString` trait. Its `to_string()` method is equal to the `ToString()`
+method in .NET, and implemented automatically whenever you implement `Display`.
+
 Another option is to use the `std::fmt::Debug` trait. The `Debug` trait is
 implemented for all standard types and can be used to print the internal
 representation of a type. The following example shows how to use the `derive`