Update IPsec support description for ErGwScale

Author: MekaylaMoore

articles/expressroute/scalable-gateway.md

@@ -24,7 +24,7 @@ The virtual network gateway infrastructure autoscales between the minimum and ma
 * **Basic IP**: ErGwScale doesn't support the Basic IP SKU. You need to use a Standard IP SKU to configure ErGwScale.
 * **Minimum and maximum scale units**: You can configure the scale unit for ErGwScale between 1 and 40. The *minimum scale unit* can't be lower than 1 and the *maximum scale unit* can't be higher than 40.
 * **Migration scenarios**: You can't migrate from Standard/ErGw1Az or HighPerf/ErGw2Az/UltraPerf/ErGw3Az to ErGwScale in the preview.
-* **IPsec over ExpressRoute**: ErGwScale currently doesn't support IPsec deployment over ExpressRoute. 
+* **IPsec over ExpressRoute**: ErGwScale currently doesn't support IPsec traffic over ExpressRoute. 
 
 ### Supported performance per scale unit