[pgpool-committers: 9260] pgpool: Doc: fix restrictions section.

[Tatsuo Ishii]

Doc: fix restrictions section.

- Add mention about SCRAM-SHA-256 authentication
- Add mention about snapshot isolation mode

Branch
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V4_2_STABLE

Details
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https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=8e525a8623bbc92e258cb6bfe6bb2ae9c0221323

Modified Files
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doc.ja/src/sgml/restrictions.sgml | 16 ++++++++++------
doc/src/sgml/restrictions.sgml    | 26 ++++++++++++++++----------
2 files changed, 26 insertions(+), 16 deletions(-)