[CI] Check links with references into GitHub

[chalin]

• Parent issue: [CI] External link checking improvements for 24H2-25H1 #5017
• This is going to take a while since I'm currently finding a lot of invalid links. I'm creating this issue separate from the parent issue so that we can layout the work detail and share the link updates across repos. Details TBC

Tasks

• [CI] Check links into github.com, excluding 4XXs for now #5952 - general setup of checking of github.com links, with IgnoreURLs temporarily set

---

We'll need volunteers to address each of the ignored URLs organizations, projects, and folders currently being ignored via these regexs:

  - ^https?://github\.com/(OpenObservability|opentracing|openzipkin|[pP]rometheus|prometheus-community|prometheus-operator|avillela|census-instrumentation|cloudevents|dotnet|googleapis|in-toto|w3c)/
  - ^https?://github\.com/open-telemetry/(build-tools|community|opentelemetry-collector-contrib|opentelemetry-collector|opentelemetry-dotnet-instrumentation|opentelemetry-helm-charts|opentelemetry-java-instrumentation|opentelemetry-java|opentelemetry-operator|opentelemetry-proto|opentelemetry-python-contrib|opentelemetry-specification|oteps|semantic-conventions|sig-end-user|weaver)/
  - ^https?://github\.com/open-telemetry/opentelemetry-demo/blob/main/src/(imageprovider|loadgenerator|otelcollector|.*service)

GitHub organizations to un-ignore:

• OpenObservability - [CI] Resolve and drop all github.com IgnoreURL rules for non-OTel orgs #5954
• opentracing - [CI] Resolve and drop all github.com IgnoreURL rules for non-OTel orgs #5954
• openzipkin - [CI] Resolve and drop all github.com IgnoreURL rules for non-OTel orgs #5954
• [pP]rometheus - [CI] Resolve and drop all github.com IgnoreURL rules for non-OTel orgs #5954
• prometheus-community - [CI] Resolve and drop all github.com IgnoreURL rules for non-OTel orgs #5954
• prometheus-operator - [CI] Fix some external links into GitHub, and clean up IgnoreURL rules #5953, fixes some broken links
• avillela - [CI] Fix some external links into GitHub, and clean up IgnoreURL rules #5953
• census-instrumentation - [CI] Fix some external links into GitHub, and clean up IgnoreURL rules #5953
• cloudevents - [CI] Fix some external links into GitHub, and clean up IgnoreURL rules #5953
• dotnet - [CI] Fix some external links into GitHub, and clean up IgnoreURL rules #5953
• googleapis - [CI] Fix some external links into GitHub, and clean up IgnoreURL rules #5953
• in-toto
  • [CI] Fix some external links into GitHub, and clean up IgnoreURL rules #5953
  • Update semconv once the above is merged and published
    [CI] Address semconv link to in-toto #5974
• w3c - [CI] Fix some external links into GitHub, and clean up IgnoreURL rules #5953

open-telemetry projects to un-ignore:

• build-tools - [CI] Fix some github.com links into OTel org #5955
• community - [CI] Fix some github.com links into OTel org #5955
• opentelemetry-collector-contrib
  • [CI] Fix some github.com links into OTel org #5955
  • [CI] Improve spec adjust-pages to handle README.md paths to spec-external resources #5969
  • [CI] Fix external links into opentelemetry-collector-contrib #5970
• opentelemetry-collector - [CI] Fix external links into opentelemetry-collector-contrib #5970
• opentelemetry-dotnet-instrumentation - [CI] Fixes to github.com links for opentelemetry-dotnet-instrumentation and more #5973
• opentelemetry-helm-charts - [CI] Fixes to github.com links for opentelemetry-dotnet-instrumentation and more #5973
• opentelemetry-java-instrumentation - [CI] Fixes to github.com links for opentelemetry-dotnet-instrumentation and more #5973
• opentelemetry-java - [CI] Fixes to github.com links for opentelemetry-dotnet-instrumentation and more #5973
• opentelemetry-operator - [CI] Fixes to github.com links for opentelemetry-dotnet-instrumentation and more #5973
• opentelemetry-proto - [CI] Fixes to github.com links for opentelemetry-dotnet-instrumentation and more #5973
• opentelemetry-python-contrib - [CI] Fixes to github.com links for opentelemetry-dotnet-instrumentation and more #5973
• opentelemetry-specification
  • [CI] Fixes to github.com links for opentelemetry-dotnet-instrumentation and more #5973
• oteps - [CI] Fixes to github.com links for opentelemetry-dotnet-instrumentation and more #5973
• semantic-conventions
  • [CI] Fixes to github.com links for opentelemetry-dotnet-instrumentation and more #5973
• sig-end-user - [CI] Fixes to github.com links for opentelemetry-dotnet-instrumentation and more #5973
• weaver - [CI] Fix some github.com links into OTel org #5955

Specific Paths of open-telemetry/opentelemetry-demo to un-ignore:

• imageprovider
• loadgenerator
• otelcollector
• .*service

[chalin]

/cc @trask @tiffany76 - since this came up recently in a thread of discussion when @trask asked if we checked such links. Well, we've started! 😄