fix headers

Author: boris-bazilevskiy

articles/communication-services/concepts/telephony/inbound-calling-capabilities.md

@@ -16,18 +16,18 @@ ms.subservice: pstn
 
 Inbound PSTN calling is currently supported in GA for Dynamics Omnichannel with phone numbers [provided by Microsoft](./telephony-concept.md#voice-calling-pstn) and phone numbers that supplied by [direct routing](./telephony-concept.md#azure-direct-routing).
 
-## Inbound calling with Dynamics 365 Omnichannel (OC)
+**Inbound calling with Dynamics 365 Omnichannel (OC)**
 
  Supported in General Availability, to setup inbound PSTN or direct routing with Dynamics 365 OC, follow the [instructions here](/dynamics365/customer-service/voice-channel-inbound-calling)
 
-## Inbound calling with Power Virtual Agents
+ **Inbound calling with Power Virtual Agents**
 
- Coming soon
+ *Coming soon*
 
-## Inbound calling with ACS Client Calling SDK
+**Inbound calling with ACS Client Calling SDK**
 
-Coming soon
+*Coming soon*
 
-## Inbound calling with Azure Bot Framework
+**Inbound calling with Azure Bot Framework**
 
 Customers participating in Azure Bot Framework Telephony Channel preview can find the [instructions here](/azure/bot-service/bot-service-channel-connect-telephony)