Rollup merge of rust-lang#126561 - kadiwa4:boxed_slice_into_iter_doc,…

… r=jieyouxu

`boxed_slice_into_iter`: tiny doc correction

`CURRENT_RUSTC_VERSION` isn't flexible enough for this, so it got replaced by 1.80.0 instead of 1.79.0 in rust-lang#126273 :/

compiler/rustc_lint/src/shadowed_into_iter.rs

@@ -52,7 +52,7 @@ declare_lint! {
     /// Since Rust 1.80.0, boxed slices implement `IntoIterator`. However, to avoid
     /// breakage, `boxed_slice.into_iter()` in Rust 2015, 2018, and 2021 code will still
     /// behave as `(&boxed_slice).into_iter()`, returning an iterator over
-    /// references, just like in Rust 1.80.0 and earlier.
+    /// references, just like in Rust 1.79.0 and earlier.
     /// This only applies to the method call syntax `boxed_slice.into_iter()`, not to
     /// any other syntax such as `for _ in boxed_slice` or `IntoIterator::into_iter(boxed_slice)`.
     pub BOXED_SLICE_INTO_ITER,