Rollup merge of rust-lang#104420 - TethysSvensson:master, r=JohnTitor

Fix doc example for `wrapping_abs`

The `max` variable is unused. This change introduces the `min_plus` variable, to make the example similar to the one from `saturating_abs`. An alternative would be to remove the unused variable.

library/core/src/num/nonzero.rs

@@ -659,7 +659,7 @@ macro_rules! nonzero_signed_operations {
                 #[doc = concat!("let neg = ", stringify!($Ty), "::new(-1)?;")]
                 #[doc = concat!("let min = ", stringify!($Ty), "::new(",
                                 stringify!($Int), "::MIN)?;")]
-                #[doc = concat!("let max = ", stringify!($Ty), "::new(",
+                #[doc = concat!("# let max = ", stringify!($Ty), "::new(",
                                 stringify!($Int), "::MAX)?;")]
                 ///
                 /// assert_eq!(pos, pos.wrapping_abs());