fix: DLE (config.example) add a link to the guide "PostgreSQL configuration in clones"

Description

Instead of specifying a complete request in the configuration example to get values that affect the planner, provide a link to a detailed guide.

Also how it is implemented for config.example.logical_generic.yml

Related issue

docs!475 (merged)

Examples

Checklist

• MR description has been reviewed
• MR changes are functionally tested
• MR does NOT have text changes OR there are text changes and they have been reviewed
• MR does NOT have API/CLI changes OR there are API/CLI changes and they have been reviewed
• MR does NOT have UI changes OR there are UI changes and they have been reviewed