Auto merge of #57195 - czipperz:mention_ToString_in_std_fmt_docs, r=SimonSapin

Mention ToString in std::fmt docs

I believe this should be added because `x.to_string()` is preferred over `format!("{}", x)` as the recommended way to convert a value to a string.  `std::fmt` and the `format` macro is where people look for documentation about this, and thus we should include references to this preferred functions there.

Resolves #55065

1 files changed, 5 insertions, 0 deletions

diff --git a/src/liballoc/macros.rs b/src/liballoc/macros.rs
index 1978efda097..db91b07fa71 100644
--- a/src/liballoc/macros.rs
+++ b/src/liballoc/macros.rs
@@ -73,9 +73,14 @@ macro_rules! vec {
 /// The same convention is used with [`print!`] and [`write!`] macros,
 /// depending on the intended destination of the string.
 ///
+/// To convert a single value to a string, use the [`to_string`] method.  This
+/// will use the [`Display`] formatting trait.
+///
 /// [fmt]: ../std/fmt/index.html
 /// [`print!`]: ../std/macro.print.html
 /// [`write!`]: ../std/macro.write.html
+/// [`to_string`]: ../std/string/trait.ToString.html
+/// [`Display`]: ../std/fmt/trait.Display.html
 ///
 /// # Panics
 ///