Re: logical replication restrictions

Minor review comments for v6.

"If the subscriber sets min_apply_delay parameter, ..."

I suggest we use subscription rather than subscriber, because

this parameter refers to and is used for one subscription.

My suggestion is

"If one subscription sets min_apply_delay parameter, ..."

In case if you agree, there are other places to apply this change.

It might be better to write a note for committer

like "Bump catalog version" at the bottom of the commit message.

The former interprets input number as milliseconds in case of no units,

while the latter takes it as seconds without units.

I feel it would be better to make them aligned.