fix vars naming

lib/tasks/cognigy/speech-config.js

@@ -92,13 +92,13 @@ class SpeechConfig extends Emitter {
     /* turn config can now be emptied for next turn of conversation */
     this.turnConfig = {};
 
-    const config = {};
+    const finalConfig = final;
     if(sayConfig){
-      config.say = sayConfig;
+      finalConfig.say = sayConfig;
     }else if(playConfig){
-      config.play = playConfig;
+      finalConfig.play = playConfig;
     }
-    return config;
+    return finalConfig;
   }
 }