pgsql-server: Replace incorrect example for quote_ident Greg Sabino

Log Message:
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Replace incorrect example for quote_ident

Greg Sabino Mullan

Modified Files:
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pgsql-server/doc/src/sgml:
func.sgml (r1.217 -> r1.218)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/doc/src/sgml/func.sgml.diff?r1=1.217&r2=1.218)