Update istio-meshconfig.md

Acrolinx fix

Author: AnnaMHuff

articles/aks/istio-meshconfig.md

@@ -67,7 +67,7 @@ This guide assumes you followed the [documentation][istio-deploy-addon] to enabl
 
 ### Mesh configuration and upgrades
 
-When you're performing [canary upgrade for Istio](./istio-upgrade.md), you need create a separate ConfigMap for the new revision in the `aks-istio-system` namespace **before initiating the canary upgrade**. This way the configuration is available when the new revision's control plane is deployed on cluster. For example, if you're upgrading the mesh from asm-1-18 to asm-1-19, you need to copy changes over from `istio-shared-configmap-asm-1-18` to create a new ConfigMap called `istio-shared-configmap-asm-1-19` in the `aks-istio-system` namespace.
+When you're performing [canary upgrade for Istio](./istio-upgrade.md), you need to create a separate ConfigMap for the new revision in the `aks-istio-system` namespace **before initiating the canary upgrade**. This way the configuration is available when the new revision's control plane is deployed on cluster. For example, if you're upgrading the mesh from asm-1-18 to asm-1-19, you need to copy changes over from `istio-shared-configmap-asm-1-18` to create a new ConfigMap called `istio-shared-configmap-asm-1-19` in the `aks-istio-system` namespace.
 
 After the upgrade is completed or rolled back, you can delete the ConfigMap of the revision that was removed from the cluster.