Update example config

Author: DanielLiu1123

httpexchange-spring-boot-autoconfigure/src/main/resources/application-http-exchange-statrer-example.yml

@@ -6,7 +6,7 @@ spring:
       ssl:
         bundle: bundle1
 http-exchange:
-  base-packages: [com.example.api]
+  base-packages: [ com.example.api ]
   base-url: http://api-gateway
   bean-to-query-enabled: false
   request-mapping-support-enabled: false
@@ -24,10 +24,8 @@ http-exchange:
         bundle: bundle2
       headers:
         - key: X-Key
-          values: [value1, value2]
+          values: [ value1, value2 ]
       clients:
-        - order-api
-        - OrderDetailApi
         - com.example.api.OrderItemApi
         - com.**.*Api
         - com.example.**