diff --git a/google/cloud/beyondcorp/appconnections/v1/app_connections_service.proto b/google/cloud/beyondcorp/appconnections/v1/app_connections_service.proto
index 73f19ff7b53b9..48143604a5d70 100644
--- a/google/cloud/beyondcorp/appconnections/v1/app_connections_service.proto
+++ b/google/cloud/beyondcorp/appconnections/v1/app_connections_service.proto
@@ -40,12 +40,12 @@ option (google.api.resource_definition) = {
   pattern: "projects/{project}/locations/{location}/appGateways/{app_gateway}"
 };
 
-// ## API Overview
+// API Overview:
 //
 // The `beyondcorp.googleapis.com` service implements the Google Cloud
 // BeyondCorp API.
 //
-// ## Data Model
+// Data Model:
 //
 // The AppConnectionsService exposes the following resources:
 //
diff --git a/google/cloud/beyondcorp/appconnectors/v1/app_connectors_service.proto b/google/cloud/beyondcorp/appconnectors/v1/app_connectors_service.proto
index d7d6d74f44ef8..54634f867983e 100644
--- a/google/cloud/beyondcorp/appconnectors/v1/app_connectors_service.proto
+++ b/google/cloud/beyondcorp/appconnectors/v1/app_connectors_service.proto
@@ -34,12 +34,12 @@ option java_package = "com.google.cloud.beyondcorp.appconnectors.v1";
 option php_namespace = "Google\\Cloud\\BeyondCorp\\AppConnectors\\V1";
 option ruby_package = "Google::Cloud::BeyondCorp::AppConnectors::V1";
 
-// ## API Overview
+// API Overview:
 //
 // The `beyondcorp.googleapis.com` service implements the Google Cloud
 // BeyondCorp API.
 //
-// ## Data Model
+// Data Model:
 //
 // The AppConnectorsService exposes the following resource:
 //
diff --git a/google/cloud/beyondcorp/appgateways/v1/app_gateways_service.proto b/google/cloud/beyondcorp/appgateways/v1/app_gateways_service.proto
index 605a9354e0321..fa21383bfc72c 100644
--- a/google/cloud/beyondcorp/appgateways/v1/app_gateways_service.proto
+++ b/google/cloud/beyondcorp/appgateways/v1/app_gateways_service.proto
@@ -31,12 +31,12 @@ option java_package = "com.google.cloud.beyondcorp.appgateways.v1";
 option php_namespace = "Google\\Cloud\\BeyondCorp\\AppGateways\\V1";
 option ruby_package = "Google::Cloud::BeyondCorp::AppGateways::V1";
 
-// ## API Overview
+// API Overview:
 //
 // The `beyondcorp.googleapis.com` service implements the Google Cloud
 // BeyondCorp API.
 //
-// ## Data Model
+// Data Model:
 //
 // The AppGatewaysService exposes the following resources:
 //
diff --git a/google/cloud/beyondcorp/clientconnectorservices/v1/client_connector_services_service.proto b/google/cloud/beyondcorp/clientconnectorservices/v1/client_connector_services_service.proto
index fdfb27cdd23b1..87932f735de27 100644
--- a/google/cloud/beyondcorp/clientconnectorservices/v1/client_connector_services_service.proto
+++ b/google/cloud/beyondcorp/clientconnectorservices/v1/client_connector_services_service.proto
@@ -32,12 +32,12 @@ option java_package = "com.google.cloud.beyondcorp.clientconnectorservices.v1";
 option php_namespace = "Google\\Cloud\\BeyondCorp\\ClientConnectorServices\\V1";
 option ruby_package = "Google::Cloud::BeyondCorp::ClientConnectorServices::V1";
 
-// ## API Overview
+// API Overview:
 //
 // The `beyondcorp.googleapis.com` service implements the Google Cloud
 // BeyondCorp API.
 //
-// ## Data Model
+// Data Model:
 //
 // The ClientConnectorServicesService exposes the following resources:
 //
diff --git a/google/cloud/beyondcorp/clientgateways/v1/client_gateways_service.proto b/google/cloud/beyondcorp/clientgateways/v1/client_gateways_service.proto
index 089fc73dd0911..8ce25bb1ed9e1 100644
--- a/google/cloud/beyondcorp/clientgateways/v1/client_gateways_service.proto
+++ b/google/cloud/beyondcorp/clientgateways/v1/client_gateways_service.proto
@@ -31,12 +31,12 @@ option java_package = "com.google.cloud.beyondcorp.clientgateways.v1";
 option php_namespace = "Google\\Cloud\\BeyondCorp\\ClientGateways\\V1";
 option ruby_package = "Google::Cloud::BeyondCorp::ClientGateways::V1";
 
-// ## API Overview
+// API Overview:
 //
 // The `beyondcorp.googleapis.com` service implements the Google Cloud
 // BeyondCorp API.
 //
-// ## Data Model
+// Data Model:
 //
 // The ClientGatewaysService exposes the following resources:
 //