Rollup merge of rust-lang#116594 - tae-soo-kim:convert-tryfrom-doc, r=scottmcm

Fix `std::convert::TryFrom` doc

Original text:

> truncating the [i64](https://doc.rust-lang.org/std/primitive.i64.html) to an [i32](https://doc.rust-lang.org/std/primitive.i32.html) (essentially giving the [i64](https://doc.rust-lang.org/std/primitive.i64.html)’s value modulo [i32::MAX](https://doc.rust-lang.org/std/primitive.i32.html#associatedconstant.MAX))

This can't be true, because `i32::MAX` is an odd number. The correct value seems `(i32::MAX + 1) * 2`, but this is complicated and distracting, and I suggest removing the parentheses entirely.

Author: matthiaskrgr

library/core/src/convert/mod.rs

@@ -618,12 +618,11 @@ pub trait TryInto<T>: Sized {
 /// For example, there is no way to convert an [`i64`] into an [`i32`]
 /// using the [`From`] trait, because an [`i64`] may contain a value
 /// that an [`i32`] cannot represent and so the conversion would lose data.
-/// This might be handled by truncating the [`i64`] to an [`i32`] (essentially
-/// giving the [`i64`]'s value modulo [`i32::MAX`]) or by simply returning
-/// [`i32::MAX`], or by some other method.  The [`From`] trait is intended
-/// for perfect conversions, so the `TryFrom` trait informs the
-/// programmer when a type conversion could go bad and lets them
-/// decide how to handle it.
+/// This might be handled by truncating the [`i64`] to an [`i32`] or by
+/// simply returning [`i32::MAX`], or by some other method.  The [`From`]
+/// trait is intended for perfect conversions, so the `TryFrom` trait
+/// informs the programmer when a type conversion could go bad and lets
+/// them decide how to handle it.
 ///
 /// # Generic Implementations
 ///