Replace incorrect example for quote_ident

Patch applied. Thanks.

---------------------------------------------------------------------------

Greg Sabino Mullane wrote:

Index: func.sgml
===================================================================
RCS file: /projects/cvsroot/pgsql-server/doc/src/sgml/func.sgml,v
retrieving revision 1.217
diff -c -r1.217 func.sgml
*** func.sgml	10 Aug 2004 00:55:03 -0000	1.217
--- func.sgml	12 Aug 2004 18:37:20 -0000
***************
*** 1179,1186 ****
non-identifier characters or would be case-folded).
Embedded quotes are properly doubled.
</entry>
!        <entry><literal>quote_ident(`Foo`)</literal></entry>
!        <entry><literal>"Foo"</literal></entry>
</row>

<row>
--- 1179,1186 ----
non-identifier characters or would be case-folded).
Embedded quotes are properly doubled.
</entry>
!        <entry><literal>quote_ident(`Foo bar`)</literal></entry>
!        <entry><literal>"Foo bar"</literal></entry>
</row>

<row>

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