Update call-automation-teams-interop.md - small Acrolinx fix

Author: American-Dipper

articles/communication-services/concepts/call-automation/call-automation-teams-interop.md

@@ -41,7 +41,7 @@ Now, lets look at the scenario where Contoso is already using a CCaaS provider f
 
 1. Customer is connected to contact center solution in an ongoing call. The customer might be waiting in queue or interacting with a virtual agent/bot. Contact center solution identifies an available agent on Teams (presence via Graph APIs) to connect to this call. 
 1. Contact Center provider has implemented a web service, using Azure Communication Services Call Automation, that requests this Teams user to be added to the call. 
-3. Since customer call is handled by contact center provider, they need to configure a SBC with Azure Communication Services Direct Routing in order to route/connect calls to Microsoft. With this model, only the contact center provider needs to have a SBC setup. This SBC can handle connections to multiple Teams tenants, making it easy for developers to implement per-region multitenant trunks that maximize value. Contoso doesn't have to set up Teams Direct Routing for each tenant, thus reducing the telephony overhead and Contoso's onboarding time to contact center provider. 
+3. Since customer call is handled by contact center provider, they need to configure an SBC with Azure Communication Services Direct Routing in order to route/connect calls to Microsoft. With this model, only the contact center provider needs to have an SBC setup. This SBC can handle connections to multiple Teams tenants, making it easy for developers to implement per-region multitenant trunks that maximize value. Contoso doesn't have to set up Teams Direct Routing for each tenant, thus reducing the telephony overhead and Contoso's onboarding time to contact center provider. 
 1. With Teams interop built into Call Automation, Azure Communication Services then uses the Teams user’s ObjectId to add them to the call. The Teams user receives the incoming call notification. They accept and join the call.