ChannelPinger: restore the Javadoc link
@@ -42,7 +42,7 @@ import java.util.logging.Level;
import java.util.logging.Logger;
/**
- * Establish a periodic ping to keep connections between {@link Agent agent}
+ * Establish a periodic ping to keep connections between {@link Slave agents}
* and the main Jenkins node alive. This prevents network proxies from
* terminating connections that are idle for too long.
*
