Merge pull request #1255 from ShammgodYoung/patch-2

对serialVersionUID属性进行缩进

mybatis-plus-generator/src/main/resources/templates/entity.java.vm

@@ -45,7 +45,7 @@ public class ${entity} implements Serializable {
 #end
 
 #if(${entitySerialVersionUID})
-private static final long serialVersionUID=1L;
+    private static final long serialVersionUID=1L;
 #end
 ## ----------  BEGIN 字段循环遍历  ----------
 #foreach($field in ${table.fields})