fix: Changes facebook auth host to resolve JWT validation issue

src/Adapters/Auth/facebook.js

@@ -7,7 +7,7 @@ const jwt = require('jsonwebtoken');
 const httpsRequest = require('./httpsRequest');
 const authUtils = require('./utils');
 
-const TOKEN_ISSUER = 'https://facebook.com';
+const TOKEN_ISSUER = 'https://www.facebook.com';
 
 function getAppSecretPath(authData, options = {}) {
   const appSecret = options.appSecret;