Doc: fix English watchdog document.

It mistakenly used "main" PostgreSQL node instead of "primary".

diff --git a/doc/src/sgml/watchdog.sgml b/doc/src/sgml/watchdog.sgml
index 8135e3402b51edf7530be992b6b1acc8e75c59c6..5f8512a21172dc32a1b07deb75251bdf6cf6a347 100644 (file)
--- a/doc/src/sgml/watchdog.sgml
+++ b/doc/src/sgml/watchdog.sgml
@@ -581,10 +581,10 @@ pgpool_port2 = 9999
      <para>
       Although there are many similarities in quarantine and failover operations, but they both differ in a very
       fundamental way. The quarantine operations does not executes the <xref linkend="guc-failover-command">
-       and silently detaches the problematic node, So in the case when the main backend node is quarantined, the
-       <productname>Pgpool-II</productname> will not promote the standby to take over the main node responsibilities
-       and until the main node is quarantined the <productname>Pgpool-II</productname> will not have
-       any usable main backend node.
+       and silently detaches the problematic node, so in the case when the primary backend node is quarantined, the
+       <productname>Pgpool-II</productname> will not promote the standby to take over the primary node responsibilities
+       and until the primary node is quarantined the <productname>Pgpool-II</productname> will not have
+       any usable primary backend node.
      </para>
      <para>
       Moreover, unlike for the failed nodes,