Add API docs

projects/gloo/api/v1/enterprise/options/extauth/v1/extauth.proto

@@ -1167,6 +1167,9 @@ message ApiKeyAuth {
         bool required = 2;
     }
 
+    // API key metadata may contain data is is invalid for a header, such as a newline. By default, this data will be validated
+    // in the data plane and mitigated in a way that provides a consistent experience for the user and visibility for the operator.
+    // This validation comes with a performance cost, and can be disabled by setting this field to `true`.
     bool skip_metadata_validation = 8;
 }
 message K8sSecretApiKeyStorage {
@@ -2121,6 +2124,9 @@ message ExtAuthConfig {
             AerospikeApiKeyStorage aerospike_apikey_storage = 5;
         }
 
+    // API key metadata may contain data is is invalid for a header, such as a newline. By default, this data will be validated
+    // in the data plane and mitigated in a way that provides a consistent experience for the user and visibility for the operator.
+    // This validation comes with a performance cost, and can be disabled by setting this field to `true`.
         bool skip_metadata_validation = 6;
     }