update javadoc link

Author: marschall

pom.xml

@@ -93,7 +93,7 @@
         <artifactId>maven-javadoc-plugin</artifactId>
         <configuration>
           <links>
-            <link>https://docs.oracle.com/javase/8/docs/api/</link>
+            <link>https://docs.oracle.com/javase/11/docs/api/</link>
             <link>https://docs.jboss.org/hibernate/orm/6.0/javadocs/</link>
           </links>
         </configuration>