[std] fix the presentation of `split_off_mut` and `split_off` documentation

Signed-off-by: xizheyin <xizheyin@smail.nju.edu.cn>

1 files changed, 2 insertions, 2 deletions

diff --git a/library/core/src/slice/mod.rs b/library/core/src/slice/mod.rs
index 058491b53a1..c9b8231e856 100644
--- a/library/core/src/slice/mod.rs
+++ b/library/core/src/slice/mod.rs
@@ -4383,7 +4383,7 @@ impl<T> [T] {
     /// assert_eq!(first_three, &['a', 'b', 'c']);
     /// ```
     ///
-    /// Splitting off the last two elements of a slice:
+    /// Splitting off a slice starting with the third element:
     ///
     /// ```
     /// let mut slice: &[_] = &['a', 'b', 'c', 'd'];
@@ -4449,7 +4449,7 @@ impl<T> [T] {
     /// assert_eq!(first_three, &mut ['a', 'b', 'c']);
     /// ```
     ///
-    /// Taking the last two elements of a slice:
+    /// Splitting off a slice starting with the third element:
     ///
     /// ```
     /// let mut slice: &mut [_] = &mut ['a', 'b', 'c', 'd'];