Not using `$schema_name_error_log`, using `$database_name_error_log` instead

[danielvillalbamota]

Description

The "..._error_log" table is not getting the name of the schema as documentation refers, but the name of database.

https://github.com/telefonicaid/fiware-cygnus/blob/808bf1fb5b3d1442686ac93646687728032bbda7/doc/cygnus-common/installation_and_administration_guide/error_persistance.md?plain=1#L21

How-to reproduce

This issue can be reproduced using a sink with datamodel dm-by-fixed-entity-type-database-schema.

Expected behavior

I would expect the table's name as documentation shows.