Update overview.md

Author: spelluru

articles/event-grid/overview.md

@@ -43,7 +43,7 @@ Event Grid offers a rich mixture of features. These features include:
 - **Publish-subscribe messaging model** - Communicate efficiently using one-to-many, many-to-one, and one-to-one messaging patterns.
 - **[Built-in cloud integration](mqtt-routing.md)** - Route your MQTT messages to Azure services or custom webhooks for further processing.
 - **Flexible and fine-grained [access control model](mqtt-access-control.md)** - Group clients and topic to simplify access control management, and use the variable support in topic templates for a fine-grained access control.
-- **MQTT broker authentication methods** - [X.509 certificate authentication](mqtt-client-authentication.md) is the industry authentication standard in IoT devices ,[Microsoft Entra IDauthentication](mqtt-client-microsoft-entra-token-and-rbac.md) is Azure's authentication standard for applications and [OAuth 2.0 (JSON Web Token) authentication](oauth-json-web-token-authentication.md) provides a lightweight, secure, and flexible option for MQTT clients that are not provisioned in Azure.
+- **MQTT broker authentication methods** - [X.509 certificate authentication](mqtt-client-authentication.md) is the industry authentication standard in IoT devices, [Microsoft Entra IDauthentication](mqtt-client-microsoft-entra-token-and-rbac.md) is Azure's authentication standard for applications and [OAuth 2.0 (JSON Web Token) authentication](oauth-json-web-token-authentication.md) provides a lightweight, secure, and flexible option for MQTT clients that are not provisioned in Azure.
 - **TLS 1.2 and TLS 1.3 support** - Secure your client communication using robust encryption protocols.
 - **Multi-session support** - Connect your applications with multiple active sessions to ensure reliability and scalability.
 - **MQTT over WebSockets** - Enable connectivity for clients in firewall-restricted environments.