Fixed cut'n'paste error in topo details response.
diff --git a/web/gui/src/main/java/org/onlab/onos/gui/TopologyResource.java b/web/gui/src/main/java/org/onlab/onos/gui/TopologyResource.java
index 14795b2..b63e3e0 100644
--- a/web/gui/src/main/java/org/onlab/onos/gui/TopologyResource.java
+++ b/web/gui/src/main/java/org/onlab/onos/gui/TopologyResource.java
@@ -101,7 +101,7 @@
                             new Prop("Vendor", device.manufacturer()),
                             new Prop("H/W Version", device.hwVersion()),
                             new Prop("S/W Version", device.swVersion()),
-                            new Prop("S/W Version", device.serialNumber()),
+                            new Prop("Serial Number", device.serialNumber()),
                             new Separator(),
                             new Prop("Latitude", annot.value("latitude")),
                             new Prop("Longitude", annot.value("longitude")),