Apply suggestions from code review

Author: nobodyiam

apollo-client/src/main/java/com/ctrip/framework/apollo/internals/RemoteConfigRepository.java

@@ -270,7 +270,7 @@ private ApolloConfig loadApolloConfig() {
                   mergeConfigurations(previousConfigurations, result.getConfigurationChanges()));
             } else if (configSyncType == ConfigSyncType.UNKNOWN) {
               String message = String.format(
-                  "Apollo Config Sync type invalid - configSyncType: %s",
+                  "Invalid config sync type - %s",
                   result.getConfigSyncType());
               throw new ApolloConfigException(message, exception);
             }

apollo-core/src/main/java/com/ctrip/framework/apollo/core/dto/ApolloConfig.java

@@ -16,7 +16,6 @@
  */
 package com.ctrip.framework.apollo.core.dto;
 
-
 import java.util.List;
 import java.util.Map;