[pgpool-committers: 4704] pgpool: Enhance online recovery document.

[Tatsuo Ishii]

Enhance online recovery document.

Clarify that 2nd stage command is only required in native replication
mode.

Branch
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V3_6_STABLE

Details
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https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=5231624f56ef4cdb13a915b8b192d4a19356dc59

Modified Files
--------------
doc.ja/src/sgml/online-recovery.sgml       | 70 +++++++++++++++++++-----
doc.ja/src/sgml/ref/pcp_recovery_node.sgml |  2 +
doc/src/sgml/online-recovery.sgml          | 87 ++++++++++++++++++++----------
doc/src/sgml/ref/pcp_recovery_node.sgml    |  3 +-
4 files changed, 119 insertions(+), 43 deletions(-)