update doc

configuration-loader/README.md

     @Data
     public static class Transfer {
         private List<String> urls;
+        @JsonProperty("test-info")
+        private String testInfo;
     }
 
     @Data
 transfer:
   # all transfer services url
   urls: [127.0.0.1:9082]
+  test-info: test-info-content
 redis:
   host: ${connector.port}
   port: 6379
 ConnectorProperties connectorProperties = ConfigLoader.parseConfig(args, ConnectorProperties.class, profile -> {
     LogSetter.setLogback("logback", profile);
 });
+```
 
-```
+**字段和属性名不一致时:**
+使用`@JsonProperty("原属性名")` 修饰字段