core: fix indentation in split_array doc comments

Author: Xiretza

library/core/src/array/mod.rs

@@ -639,9 +639,9 @@ impl<T, const N: usize> [T; N] {
     /// let v = [1, 2, 3, 4, 5, 6];
     ///
     /// {
-    ///    let (left, right) = v.split_array_ref::<0>();
-    ///    assert_eq!(left, &[]);
-    ///    assert_eq!(right, &[1, 2, 3, 4, 5, 6]);
+    ///     let (left, right) = v.split_array_ref::<0>();
+    ///     assert_eq!(left, &[]);
+    ///     assert_eq!(right, &[1, 2, 3, 4, 5, 6]);
     /// }
     ///
     /// {
@@ -713,9 +713,9 @@ impl<T, const N: usize> [T; N] {
     /// let v = [1, 2, 3, 4, 5, 6];
     ///
     /// {
-    ///    let (left, right) = v.rsplit_array_ref::<0>();
-    ///    assert_eq!(left, &[1, 2, 3, 4, 5, 6]);
-    ///    assert_eq!(right, &[]);
+    ///     let (left, right) = v.rsplit_array_ref::<0>();
+    ///     assert_eq!(left, &[1, 2, 3, 4, 5, 6]);
+    ///     assert_eq!(right, &[]);
     /// }
     ///
     /// {

library/core/src/slice/mod.rs

@@ -1774,9 +1774,9 @@ impl<T> [T] {
     /// let v = &[1, 2, 3, 4, 5, 6][..];
     ///
     /// {
-    ///    let (left, right) = v.split_array_ref::<0>().unwrap();
-    ///    assert_eq!(left, &[]);
-    ///    assert_eq!(right, [1, 2, 3, 4, 5, 6]);
+    ///     let (left, right) = v.split_array_ref::<0>().unwrap();
+    ///     assert_eq!(left, &[]);
+    ///     assert_eq!(right, [1, 2, 3, 4, 5, 6]);
     /// }
     ///
     /// {
@@ -1863,9 +1863,9 @@ impl<T> [T] {
     /// let v = &[1, 2, 3, 4, 5, 6][..];
     ///
     /// {
-    ///    let (left, right) = v.rsplit_array_ref::<0>().unwrap();
-    ///    assert_eq!(left, [1, 2, 3, 4, 5, 6]);
-    ///    assert_eq!(right, &[]);
+    ///     let (left, right) = v.rsplit_array_ref::<0>().unwrap();
+    ///     assert_eq!(left, [1, 2, 3, 4, 5, 6]);
+    ///     assert_eq!(right, &[]);
     /// }
     ///
     /// {