Fix error message typo.

Author: dlongley

lib/authorizationResponse.js

@@ -72,7 +72,7 @@ export async function send({
   } catch(cause) {
     const message = cause.data?.error_description ?? cause.message;
     const error = new Error(
-      `Could not send OID4VP authorization response: ${message}.`,
+      `Could not send OID4VP authorization response: ${message}`,
       {cause});
     error.name = 'OperationError';
     throw error;