fix gen-check

Signed-off-by: shawnh2 <shawnhxh@outlook.com>

site/content/en/latest/api/extension_types.md

@@ -59,12 +59,12 @@ _Appears in:_
 
 | Field | Type | Required | Description |
 | ---   | ---  | ---      | ---         |
+
 | `backendRefs` | _[BackendRef](#backendref) array_ |  true  | BackendRefs references a Kubernetes object that represents the gRPC service to which<br />the access logs will be sent. Currently only Service is supported. |
 | `logName` | _string_ |  false  | LogName defines the friendly name of the access log to be returned in<br />StreamAccessLogsMessage.Identifier. This allows the access log server<br />to differentiate between different access logs coming from the same Envoy. |
 | `type` | _[ALSEnvoyProxyAccessLogType](#alsenvoyproxyaccesslogtype)_ |  true  | Type defines the type of accesslog. Supported types are "HTTP" and "TCP". |
 | `http` | _[ALSEnvoyProxyHTTPAccessLogConfig](#alsenvoyproxyhttpaccesslogconfig)_ |  false  | HTTP defines additional configuration specific to HTTP access logs. |
 
-
 #### ALSEnvoyProxyAccessLogType
 
 _Underlying type:_ _string_
@@ -87,11 +87,11 @@ _Appears in:_
 
 | Field | Type | Required | Description |
 | ---   | ---  | ---      | ---         |
+
 | `requestHeaders` | _string array_ |  false  | RequestHeaders defines request headers to include in log entries sent to the access log service. |
 | `responseHeaders` | _string array_ |  false  | ResponseHeaders defines response headers to include in log entries sent to the access log service. |
 | `responseTrailers` | _string array_ |  false  | ResponseTrailers defines response trailers to include in log entries sent to the access log service. |
 
-
 #### ActiveHealthCheck