[pgpool-committers: 9030] pgpool: Doc: enhance explanation of delay_threshold_by_time.

[Tatsuo Ishii]

Doc: enhance explanation of delay_threshold_by_time.

Explicitly mention that in order to show delay_threshold_by_time,
backend_application_name is correctly set and match the
application_name in primary_conninfo.

Suggestion by zam bak.
Discussion: https://www.pgpool.net/pipermail/pgpool-general/2022-December/008584.html

Branch
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V4_4_STABLE

Details
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https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=1a259a286c6911d28705b10792ed561f529bc7b9

Modified Files
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doc.ja/src/sgml/connection-settings.sgml |  1 +
doc.ja/src/sgml/stream-check.sgml        | 11 +++++++++++
doc/src/sgml/connection-settings.sgml    |  2 ++
doc/src/sgml/stream-check.sgml           |  8 ++++++++
4 files changed, 22 insertions(+)