rust: task: fix SAFETY comment in Task::wake_up

The `SAFETY` comment inside the `wake_up` method references
erroneously the `signal_pending` C function instead of the
`wake_up_process` which is actually called.

Fix the comment to reference the correct C function.

Fixes: fe95f58 ("rust: task: adjust safety comments in Task methods")
Signed-off-by: Panagiotis Foliadis <[email protected]>
Reviewed-by: Charalampos Mitrodimas <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
[ Slightly reworded. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>

Author: panosfol

rust/kernel/task.rs

@@ -320,7 +320,7 @@ impl Task {
 
     /// Wakes up the task.
     pub fn wake_up(&self) {
-        // SAFETY: It's always safe to call `signal_pending` on a valid task, even if the task
+        // SAFETY: It's always safe to call `wake_up_process` on a valid task, even if the task
         // running.
         unsafe { bindings::wake_up_process(self.as_ptr()) };
     }