Rollup merge of rust-lang#145465 - Kivooeo:stabilize-array_repeat, r=joboet

Stabilize `array_repeat` feature

This closes [tracking issue](rust-lang#126695) and stabilises `array::repeat`

Author: Zalathar

core/src/array/mod.rs

@@ -41,16 +41,14 @@ pub use iter::IntoIter;
 ///
 /// Creating multiple copies of a `String`:
 /// ```rust
-/// #![feature(array_repeat)]
-///
 /// use std::array;
 ///
 /// let string = "Hello there!".to_string();
 /// let strings = array::repeat(string);
 /// assert_eq!(strings, ["Hello there!", "Hello there!"]);
 /// ```
 #[inline]
-#[unstable(feature = "array_repeat", issue = "126695")]
+#[stable(feature = "array_repeat", since = "CURRENT_RUSTC_VERSION")]
 pub fn repeat<T: Clone, const N: usize>(val: T) -> [T; N] {
     from_trusted_iterator(repeat_n(val, N))
 }