[PATCH] docs: rust: rbtree: fix incorrect description for `peek_next`

[WeiKang Guo]

The documentation for `Cursor::peek_next` incorrectly describes it as
"Access the previous node without moving the cursor" when it actually
accesses the next node. Update the description to correctly state
"Access the next node without moving the cursor" to match the function
name and implementation.

Reported-by: Miguel Ojeda <ojeda@xxxxxxxxxx>
Closes: https://github.com/Rust-for-Linux/linux/issues/1205
Fixes: 98c14e40e07a0 ("rust: rbtree: add cursor")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: WeiKang Guo <guoweikang.kernel@xxxxxxxxxxx>
---
 rust/kernel/rbtree.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rust/kernel/rbtree.rs b/rust/kernel/rbtree.rs
index 4729eb56827a..cd187e2ca328 100644
--- a/rust/kernel/rbtree.rs
+++ b/rust/kernel/rbtree.rs
@@ -985,7 +985,7 @@ pub fn peek_prev(&self) -> Option<(&K, &V)> {
         self.peek(Direction::Prev)
     }
 
-    /// Access the previous node without moving the cursor.
+    /// Access the next node without moving the cursor.
     pub fn peek_next(&self) -> Option<(&K, &V)> {
         self.peek(Direction::Next)
     }
-- 
2.52.0