doc: update readme (#737)

* update README.md and README_ZH.md

* update readme

---------

Co-authored-by: JayLiu <38887641+luky116@users.noreply.github.com>

README.md

@@ -17,7 +17,7 @@ The principle of seata-go is consistent with that of Seata-java, which is compos
 ## TODO list
 
 - [x] TCC
-- [ ] XA
+- [x] XA
 - [x] AT
   - [x] Insert SQL
   - [x] Delete SQL
@@ -33,9 +33,9 @@ The principle of seata-go is consistent with that of Seata-java, which is compos
   - [x] Manually way
   - [x] Proxy datasource way 
 - [x] Null compensation
-- [ ] Configuration center
+- [x] Configuration center
   - [x] Configuration file
-- [ ] Registration Center
+- [x] Registration Center
 - [ ] Metric monitoring
 - [x] Compressor algorithm
 - [x] Examples

README_ZH.md

@@ -17,7 +17,7 @@ Seata-go 的原理和 Seata-java 保持一致，都是由 TM、RM 和 TC 组成
 ## 待办事项
 
 - [x] TCC
-- [ ] XA
+- [x] XA
 - [x] AT
   - [x] Insert SQL
   - [x] Delete SQL
@@ -35,9 +35,9 @@ Seata-go 的原理和 Seata-java 保持一致，都是由 TM、RM 和 TC 组成
 - [x] 空补偿
   - [x] 手动方式
   - [x] 代理数据源方式
-- [ ] 配置中心
+- [x] 配置中心
   - [x] 配置文件
-- [ ] 注册中心
+- [x] 注册中心
 - [ ] Metric 监控
 - [x] 压缩算法
 - [x] Sample 例子