Syntax fix in SRBridging

Change-Id: Ibcf2fcf6ddf2d79d7c349d79bf2985a246d38f8c
diff --git a/TestON/tests/USECASE/SegmentRouting/SRBridging/SRBridging.py b/TestON/tests/USECASE/SegmentRouting/SRBridging/SRBridging.py
index dc2fca0..1606e1b 100644
--- a/TestON/tests/USECASE/SegmentRouting/SRBridging/SRBridging.py
+++ b/TestON/tests/USECASE/SegmentRouting/SRBridging/SRBridging.py
@@ -440,7 +440,7 @@
                             test_idx=19,
                             topology='2x2 dual-linked',
                             onosNodes=3,
-                            description="Bridging test between two tagged hosts"
+                            description="Bridging test between two tagged hosts",
                             vlan=[ 10, 10, 20, 20 ] )
 
     def CASE21( self, main ):