update screenshots

Author: duongau

articles/expressroute/expressroute-troubleshooting-expressroute-overview.md

@@ -60,8 +60,8 @@ The following sections represent the logical steps in troubleshooting an Express
 
 Provisioning an ExpressRoute circuit establishes a redundant layer 2 connection between CEs/PE-MSEEs (2/4) and MSEEs (5). For more information on how to create, modify, provision, and verify an ExpressRoute circuit, see the article [Create and modify an ExpressRoute circuit][CreateCircuit].
 
->[!TIP]
->A service key uniquely identifies an ExpressRoute circuit. If you need assistance from Microsoft or from an ExpressRoute partner to troubleshoot an ExpressRoute issue, provide the service key to readily identify the circuit.
+> [!TIP]
+> A service key uniquely identifies an ExpressRoute circuit. If you need assistance from Microsoft or from an ExpressRoute partner to troubleshoot an ExpressRoute issue, provide the service key to readily identify the circuit.
 
 ### Verification via the Azure portal