fix IDREF attribute linkend 错误2

Author: ChenHuajun

postgresql/doc/src/sgml/release-13.sgml

@@ -4132,7 +4132,7 @@ Author: Alexander Korotkov <akorotkov@postgresql.org>
       </para>
 ____________________________________________________________________________-->
       <para>
-       添加jsonpath <link linkend="functions-sqljs-path-operators">.<function>datetime()</function></link>方法。 (Nikita Glukhov, Teodor Sigaev, Oleg Bartunov, Alexander
+       添加jsonpath <link linkend="functions-sqljson-path-operators">.<function>datetime()</function></link>方法。 (Nikita Glukhov, Teodor Sigaev, Oleg Bartunov, Alexander
        Korotkov)
       </para>