[DOC] update JMS Appender docs; only java: protocol supported from 2.17
@@ -1611,6 +1611,7 @@ public class ConnectionFactory {
<td><em>Required</em></td>
<td>The URL of the provider to use as defined by
<a class="javadoc" href="http://download.oracle.com/javase/7/docs/api/javax/naming/Context.html#PROVIDER_URL">PROVIDER_URL</a>.
+ From Log4j 2.17, only the <code>java:</code> protocol is supported.
</td>
</tr>
<tr>
