pgsql-server: Correct erroneous table title, per Halley Pacheco de

Log Message:
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Correct erroneous table title, per Halley Pacheco de Oliveira.

Tags:
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REL7_4_STABLE

Modified Files:
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pgsql-server/doc/src/sgml:
information_schema.sgml (r1.10.2.2 -> r1.10.2.3)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/doc/src/sgml/information_schema.sgml.diff?r1=1.10.2.2&r2=1.10.2.3)