fix: force re-publish of zh configure-readme to refresh stale custom-code link

The link checker reported https://buildwithfern.com/products/sdks/custom-code.mdx
as a 404 from the rendered Chinese page /learn/zh/sdks/deep-dives/readme.

The source link was already corrected in #5348 from /products/sdks/custom-code.mdx
to /learn/sdks/overview/custom-code, but the deployed translation page is still
serving the pre-#5348 content. This commit adds a trailing newline to nudge the
file through the docs publish pipeline so the corrected link is uploaded again.

Also deletes the scaffold file as instructed.

Author: devin-ai-integration[bot]

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

@@ -16,4 +16,4 @@ sidebar-title: 自定义 README
 
 ## 其他自定义
 
-要超越可用的配置选项，您可以[手动编辑 `README.md` 文件](/learn/sdks/overview/custom-code)。然后，将其添加到 `.fernignore` 文件中，以防止在重新生成过程中被覆盖。
+要超越可用的配置选项，您可以[手动编辑 `README.md` 文件](/learn/sdks/overview/custom-code)。然后，将其添加到 `.fernignore` 文件中，以防止在重新生成过程中被覆盖。