Fixed incorrect table name during migration

[witaway]

Previously, when the fabricator table name was non-default, incorrect table name was used during creation self-reference in migrations. In consequence, migration has failed.

I've made a little patch to solve this problem.

Issue: #150

[what-the-diff]

PR Summary

• Modified Foreign Key Constraints in Migration File
  The configuration for creating the pages table in our database has been updated. This change specifically concerns the 'parent-child' relationship within the pages table. Now, the system dynamically determines the name of the related table based on certain configuration settings, enhancing flexibility and potential customization.

[witaway]

It's not a big deal, but I just wanted to create my first pull-request to be honest 🙂

[Z3d0X]

Thanks