fix: wrap protoc-gen-openapi v0.1.7 link in angle brackets in zh changelog

The bare URL in the Chinese translation was being parsed with the trailing fullwidth right paren U+FF09 included, causing the link checker to flag https://github.com/fern-api/protoc-gen-openapi/releases/tag/v0.1.7%EF%BC%89 as missing. Wrapping the URL in <...> autolink delimiters terminates the URL before the fullwidth paren.

Author: devin-ai-integration[bot]

.github/broken-links/broken-links.md

@@ -44,4 +44,4 @@ generators:
 **`(feat):`** 通过以下方面改进 gRPC 代码生成：
  1. 更新枚举表示和 .ToProto + .FromProto 映射器。
  2. 修复渲染 gRPC 客户端引用的问题。
- 3. 更新 protoc-gen-openapi 以展开合成 oneof 类型（参考：https://github.com/fern-api/protoc-gen-openapi/releases/tag/v0.1.7）
+ 3. 更新 protoc-gen-openapi 以展开合成 oneof 类型（参考：<https://github.com/fern-api/protoc-gen-openapi/releases/tag/v0.1.7>）