fixed header

Author: duongau

articles/expressroute/expressroute-monitoring-metrics-alerts.md

@@ -65,7 +65,7 @@ Metrics explorer supports SUM, MAX, MIN, AVG and COUNT as [aggregation types](..
 | [Count of routes learned from peer](#learnedroutes)| Availability | Count | Maximum | Count Of Routes Learned From Peer by ExpressRouteGateway | roleInstance | Yes | 
 | [Frequency of routes changed](#frequency) | Availability | Count | Total | Frequency of Routes change in ExpressRoute Gateway | roleInstance | Yes | 
 | [Number of VMs in virtual network](#vm) | Availability | Count | Maximum | Number of VMs in the Virtual Network | No Dimensions | Yes |
-| [Active flows](#activeflows) | Scalability | Count | Average | Number of active flows on ExpressRoute Gateway | roleInstance | Yes |
+| [Count of active flows](#activeflows) | Scalability | Count | Average | Number of active flows on ExpressRoute Gateway | roleInstance | Yes |
 | [Max flows created per second](#maxflows) | Scalability | FlowsPerSecond | Maximum | Maximum number of flows created per second on ExpressRoute Gateway | roleInstance, direction | Yes |
 
 ### ExpressRoute Gateway connections
@@ -291,7 +291,7 @@ This metric shows the number of virtual machines that are using the ExpressRoute
 > To maintain reliability of the service, Microsoft often performs platform or OS maintenance on the gateway service. During this time, this metric may fluctuate and report inaccurately.
 >
 
-## <a name = "activeflows"></a>Active flows
+## <a name = "activeflows"></a>Count of active flows
 
 Aggregation type: *Avg*
 Split by: Gateway Instance