changelog for #18011

(cherry picked from commit 51cf16f4b4281edb788c1097d18201a86656be4d)
Signed-off-by: Domen Kožar <[e-mail]>

nixos/doc/manual/release-notes/rl-1609.xml

···
     was changed to YAML.</para>
   </listitem>
 
+  <listitem>
+    <para>
+      PHP has been upgraded to 7.0
+    </para>
+  </listitem>
+
 </itemizedlist>