message: sys_clone: Add doc comment
diff: @@ -176,6 +176,7 @@ extern "C" fn __sys_clone(id: *mut Tid, func: extern "C" fn(usize), arg: usize)
  0
  }
  +/// Creates a new thread based on the configuration of the current thread.
  #[cfg(feature = "newlib")]
  #[no_mangle]
  pub extern "C" fn sys_clone(id: *mut Tid, func: extern "C" fn(usize), arg: usize) -> i32 {
  