[grid] Fixing a log output [skip ci]

Author: diemol

java/src/org/openqa/selenium/grid/node/local/LocalNode.java

@@ -152,7 +152,7 @@ private LocalNode(
       .ticker(ticker)
       .removalListener((RemovalListener<SessionId, SessionSlot>) notification -> {
         // Attempt to stop the session
-        LOG.log(Debug.getDebugLogLevel(), "Stopping session %s", notification.getKey().toString());
+        LOG.log(Debug.getDebugLogLevel(), "Stopping session {0}", notification.getKey().toString());
         SessionSlot slot = notification.getValue();
         if (!slot.isAvailable()) {
           slot.stop();