Update release notes to reflect recent commit 0f934b0.

Author: Hou Zhijie
Discussion: https://postgr.es/m/ZnWeUgdHong93fQN@momjian.us
Discussion: https://postgr.es/m/OS3PR01MB57187B959C1ECC78B0C7C91A94D32@OS3PR01MB5718.jpnprd01.prod.outlook.com

Author: Amit Kapila

doc/src/sgml/release-17.sgml

@@ -1341,6 +1341,8 @@ Author: Michael Paquier <michael@paquier.xyz>
 <!--
 Author: Amit Kapila <akapila@postgresql.org>
 2024-03-08 [bf279ddd1] Introduce a new GUC 'standby_slot_names'.
+Author: Amit Kapila <akapila@postgresql.org>
+2024-07-01 [0f934b073] Rename standby_slot_names to synchronized_standby_slots.
 -->
 
       <listitem>