:bug: Broken links detected on fixed.docs.upsun.com

[github-actions]

Broken Link	Parent	Line in Parent	Reason
https://www.gatsbyjs.com/docs/conceptual/overview-of-the-gatsby-build-process/#understanding-gatsby-build-build-time	https://fixed.docs.upsun.com/create-apps/runtime-operations.html	13019	ConnectionError: ('Connection aborted.', ConnectionResetError(104, 'Connection reset by peer'))
https://developer.upsun.com/old/posts/ready-to-have-fun-try-kotlin-and-spring	https://fixed.docs.upsun.com/languages/java.html	12941	404 Not Found
https://developer.upsun.com/old/posts/releases	https://fixed.docs.upsun.com/languages/rust.html	12697	404 Not Found
https://developer.upsun.com/old/posts/platformsh-is-now-using-annual-carbon-intensities-from-electricity-maps	https://fixed.docs.upsun.com/development/regions.html	12734	404 Not Found
https://docs.docksal.io/stack/custom-configuration/#custom-configuration	https://fixed.docs.upsun.com/development/local/docksal.html	13157	ConnectionError: HTTPSConnectionPool(host='docs.docksal.io', port=443): Max retries exceeded with url: /stack/custom-configuration/ (Caused by NewConnectionError("HTTPSConnection(host='docs.docksal.io', port=443): Failed to establish a new ...