Cannonial URL for Register page url shows ?cID133 instead of /register. How do I fix it on the DB?

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Hi Concrete5 community,

Somehow when developing a site for my client I must have done something to make the concrete5 system change its Canonial URL to its default page id and not the one set as "/register".

As I have made many changes on the backend I do not thing a reinstall is optional, how am I able to change the register's page Canonial URL in the mySQL database?

Thanks.