doc fix

tokio/src/runtime/metrics/runtime.rs

@@ -681,29 +681,8 @@ impl RuntimeMetrics {
             }
         }
 
-        /// Returns the number of tasks currently scheduled in the runtime's
-        /// injection queue.
-        ///
-        /// Tasks that are spawned or notified from a non-runtime thread are
-        /// scheduled using the runtime's injection queue. This metric returns the
-        /// **current** number of tasks pending in the injection queue. As such, the
-        /// returned value may increase or decrease as new tasks are scheduled and
-        /// processed.
-        ///
-        /// # Examples
-        ///
-        /// ```
-        /// use tokio::runtime::Handle;
-        ///
-        /// #[tokio::main]
-        /// async fn main() {
-        ///     let metrics = Handle::current().metrics();
-        ///
-        ///     let n = metrics.injection_queue_depth();
-        ///     println!("{} tasks currently pending in the runtime's injection queue", n);
-        /// }
-        /// ```
         #[deprecated = "Renamed to global_queue_depth"]
+        /// Renamed to [`RuntimeMetrics::global_queue_depth`]
         pub fn injection_queue_depth(&self) -> usize {
             self.handle.inner.injection_queue_depth()
         }