chore: fix issue status of README-CN.md (#1437)

## Rationale
The link for the issue status of README-CN.md is broken.

## Detailed Changes
Update the link.

## Test Plan
Looks right.

README-CN.md

@@ -2,7 +2,7 @@
 
 ![License](https://img.shields.io/badge/license-Apache--2.0-green.svg)
 [![CI](https://github.com/apache/incubator-horaedb/actions/workflows/ci.yml/badge.svg)](https://github.com/apache/incubator-horaedb/actions/workflows/ci.yml)
-[![OpenIssue](https://img.shields.io/github/issues/apache/horaedb)](https://github.com/apache/horaedb/issues)
+[![OpenIssue](https://img.shields.io/github/issues/apache/incubator-horaedb)](https://github.com/apache/incubator-horaedb/issues)
 <!-- [![Docker](https://img.shields.io/docker/v/apache/horaedb-server?logo=docker)](https://hub.docker.com/r/apache/horaedb-server) TODO need to wait for first apache version release. --> 
 
 [English](./README.md)