Update setting_up_edb_clone_schema.mdx

[yuki-tei]

Hi team,
Greetings. Hope you are doing well and healthy.

What Changed?

While validating edb cloneschema, I found that some package installing section is missing and your instruction cannot be performed from top to bottom because you have to modify shared_preload_libraries before create extension, otherwise otherwise the create extension should be failed. I also move the parallel clone installation part to the top as part of prerequisite extension, in order to avoid any overlooking.

Alongside the draft, why do you leave this as part of EDB Postgres Advanced Server (EPAS)? Would it be better if this is part of Postgres extensions available by deployment?

I appreciate for all your confirming and discussing.

Kind Regards,
Yuki TEi