correcting typo

Author: Sachin Maheshwari

config/default.js

@@ -95,7 +95,7 @@ module.exports = {
   KAFKA_MESSAGE_ORIGINATOR: process.env.KAFKA_MESSAGE_ORIGINATOR || 'taas-api',
 
   // topics for error
-  TAAS_ERROR_TOPIC: process.env.UBAHN_ERROR_TOPIC || 'taas.action.error',
+  TAAS_ERROR_TOPIC: process.env.TAAS_ERROR_TOPIC || 'taas.action.error',
   // topics for job service
   // the create job entity Kafka message topic
   TAAS_JOB_CREATE_TOPIC: process.env.TAAS_JOB_CREATE_TOPIC || 'taas.job.create',