Rollup merge of rust-lang#48282 - Centril:spelling-fix/iter-repeat-wi…

…th, r=kennytm

Fix spelling in core::iter::repeat_with: s/not/note

Fixes spelling error in rust-lang#48156 (comment).
Tracking issue: rust-lang#48169

src/libcore/iter/sources.rs

@@ -159,7 +159,7 @@ unsafe impl<A, F: FnMut() -> A> TrustedLen for RepeatWith<F> {}
 /// [`repeat`]: fn.repeat.html
 ///
 /// An iterator produced by `repeat_with()` is a `DoubleEndedIterator`.
-/// It is important to not that reversing `repeat_with(f)` will produce
+/// It is important to note that reversing `repeat_with(f)` will produce
 /// the exact same sequence as the non-reversed iterator. In other words,
 /// `repeat_with(f).rev().collect::<Vec<_>>()` is equivalent to
 /// `repeat_with(f).collect::<Vec<_>>()`.