Update format

releases/release-8.0.0.md

@@ -503,7 +503,7 @@ Quick access: [Quick start](https://docs.pingcap.com/tidb/v8.0/quick-start-with-
     - Fix the issue that parallel `Apply` might generate incorrect results when the table has a clustered index [#51372](https://github.com/pingcap/tidb/issues/51372) @[guo-shaoge](https://github.com/guo-shaoge)
     - Fix the issue that `ALTER TABLE ... COMPACT TIFLASH REPLICA` might incorrectly end when the primary key type is `VARCHAR` [#51810](https://github.com/pingcap/tidb/issues/51810) @[breezewish](https://github.com/breezewish)
 <!-- Lilian -->
-    - Fix the issue that the check on the NULL value of the 'DEFAULT NULL' attribute is incorrect when exchanging partitioned tables using the `EXCHANGE PARTITION` statement [#47167](https://github.com/pingcap/tidb/issues/47167) @[jiyfhust](https://github.com/jiyfhust)
+    - Fix the issue that the check on the `NULL` value of the `DEFAULT NULL` attribute is incorrect when exchanging partitioned tables using the `EXCHANGE PARTITION` statement [#47167](https://github.com/pingcap/tidb/issues/47167) @[jiyfhust](https://github.com/jiyfhust)
     - Fix the issue that the partition table definition might have wrong behavior when using a non-UTF8 character set [#49251](https://github.com/pingcap/tidb/issues/49251) @[YangKeao](https://github.com/YangKeao)
     - Fix the issue that the default value of some system variables is displayed incorrectly in the `information_schema.VARIABLES_INFO` table [#49461](https://github.com/pingcap/tidb/issues/49461) @[jiyfhust](https://github.com/jiyfhust)
     - Fix the issue that empty strings as database names are not checked in some cases [#45873](https://github.com/pingcap/tidb/issues/45873) @[yoshikipom](https://github.com/yoshikipom)