chore: improving a comment to refer to an issue

lib/controllers/authorization-controller/index.js

@@ -149,13 +149,12 @@ module.exports = class AuthorizationController {
       const requestUrl = request.url;
       const requestQuery = url.parse(requestUrl, true).query;
 
+      // Response from the browser with authentication code
       if (requestUrl.startsWith("/cb?code")) {
         response.end(messages.ASK_SIGN_IN_SUCCESS_MESSAGE);
         ui.confirmAllowSignIn((error, confirmSignInChoice) => {
-          // After confirmed or not browser sign in, closes the socket/port 
-          // with server.destroy().
-          // We need to keep the port open so a local hacker is not be able to 
-          // open that port until we get an answer in confirmAllowSignIn
+          // Closing the socket port with server.destroy() only after confirmation question. 
+          // See https://github.com/alexa/ask-cli/issues/476
           server.destroy();
 
           if (error) {