[skip ci] update changlog

Signed-off-by: NYhz <yinghao.zou@zilliz.com>

CHANGELOG.md

@@ -57,6 +57,7 @@ Please mark all change in change log and use the issue from GitHub
 -   \#1577 Row count incorrect if delete vectors then create index
 -   \#1580 Old segment folder not removed after merge/compact if create_index is called before adding data
 -   \#1590 Server down caused by failure to write file during concurrent mixed operations
+-   \#1601 External link bug in HTTP doc
 
 ## Feature
 -   \#216 Add CLI to get server info