: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/platformsh-is-now-using-annual-carbon-intensities-from-electricity-maps	https://fixed.docs.upsun.com/development/regions.html	12734	404 Not Found
https://docs.newrelic.com/docs/apis/intro-apis/new-relic-api-keys/#license-key	https://fixed.docs.upsun.com/increase-observability/logs/forward-logs.html	12786	ConnectionError: HTTPSConnectionPool(host='docs.newrelic.com', port=443): Max retries exceeded with url: /docs/apis/intro-apis/new-relic-api-keys/ (Caused by NewConnectionError("HTTPSConnection(host='docs.newrelic.com', port=443): Failed to...
https://letsencrypt.org/docs/challenge-types/	https://fixed.docs.upsun.com/domains/troubleshoot.html	13041	ConnectionError: HTTPSConnectionPool(host='letsencrypt.org', port=443): Max retries exceeded with url: /docs/challenge-types/ (Caused by NewConnectionError("HTTPSConnection(host='letsencrypt.org', port=443): Failed to establish a new connec...