Typo

include/grpc/grpc_security.h

@@ -155,8 +155,9 @@ GRPCAPI void grpc_channel_credentials_release(grpc_channel_credentials* creds);
    identity of the default service account of the machine. Supplying any other
    sort of call credential may result in RPCs suddenly and unexpectedly failing.
 
-   If nullptr is supplied, the returned call credentials object will use a call
-   credentials object based on the Application Default Credentials mechanism.
+   If nullptr is supplied, the returned channel credentials object will use a
+   call credentials object based on the Application Default Credentials
+   mechanism.
 */
 GRPCAPI grpc_channel_credentials* grpc_google_default_credentials_create(
     grpc_call_credentials* call_credentials);