Hikari Internal Links
Don’t worry anymore of linking a post or a category, to later change its title or slug, or changing your posts permalinks, and creating invalid links to your own site pages.
Hikari Internal Links provides a shortcode that dynamically generates links to most WordPress resources. You can query these resources based on their ID or slug, and these links are generated dynamically. Therefore if you change a resource’s title or permalink, its links will be updated automatically.