Update tutorial-custom-images.md

fixes https://github.com/MicrosoftDocs/azure-docs/issues/54703

Author: cynthn

articles/virtual-machines/linux/tutorial-custom-images.md

@@ -193,5 +193,5 @@ In this tutorial, you created a custom VM image. You learned how to:
 Advance to the next tutorial to learn about highly available virtual machines.
 
 > [!div class="nextstepaction"]
-> [Create highly available VMs](tutorial-availability-sets.md).
+> [Create highly available VMs](tutorial-availability-sets.md)