ntoskrnl.exe: Add missing linebreak to FIXME in KeDelayExecutionThread.

dlls/ntoskrnl.exe/ntoskrnl.c

@@ -2423,6 +2423,6 @@ NTSTATUS WINAPI CmUnRegisterCallback(LARGE_INTEGER cookie)
  */
 NTSTATUS WINAPI KeDelayExecutionThread(KPROCESSOR_MODE waitmode, BOOLEAN alertable, PLARGE_INTEGER interval)
 {
-    FIXME("%u %u %p", waitmode, alertable, interval);
+    FIXME("(%u, %u, %p): stub\n", waitmode, alertable, interval);
     return STATUS_NOT_IMPLEMENTED;
 }