Syntax update

Update section headers

Author: mialdrid

articles/expressroute/circuit-placement-api.md

@@ -92,7 +92,7 @@ https://management.azure.com/subscriptions/{subscriptionId}/providers/Microsoft.
 * 200 (OK)  The request is success. It will fetch list of ports.
 * 4XX (Bad Request)  One of validations failed – for example: Provider subid isn't valid.
 
-### List get a list of all port pairs by location
+### To get a list of all port pairs by location
 
 ```rest
 https://management.azure.com/subscriptions/{subscriptionId}/providers/Microsoft.Network/expressRouteProviderPorts?location={locationName}
@@ -180,7 +180,7 @@ https://management.azure.com/subscriptions/{subscriptionId}/providers/Microsoft.
 * 204 The port pair with the mentioned descriptor ID isn't available.
 * 4XX (Bad Request) One of validations failed – For example: Provider subid isn't valid.
 
-### Move a target expressRouteCircuit to a specific port pair
+### Move a target ExpressRoute Circuit to a specific port pair
 
 Once the portPairDescriptor of the target port pair is identified, the ExpressRoute partner can use the [ExpressRouteCrossConnection API](/rest/api/expressroute/express-route-cross-connections/create-or-update) to move the ExpressRoute circuit to a specific port pair.