Update documentation for proc_close behavior

Author: SinusPi

reference/exec/functions/proc-close.xml

@@ -49,9 +49,9 @@
    an error then <literal>-1</literal> is returned.
   </para>
   <para>
-   If <function>proc_get_status</function> is called before <function>proc_close</function>,
-   and finds the process not in "running" state anymore, and retrieves the exit code, then
-   <function>proc_close</function> will also return <literal>-1</literal>.
+   Prior to PHP 8.3.0, if <function>proc_get_status</function> is called before
+   <function>proc_close</function> and retrieves the exit code, then
+   <function>proc_close</function> will return <literal>-1</literal>.
   </para>
   &note.sigchild;
  </refsect1>