Fix link checking

[jack-berg]

I can't get lychee to stop trying check that a dummy example file reference in schema-docs.md is a valid local file:

https://github.com/open-telemetry/opentelemetry-configuration/actions/runs/18919286815/job/54010852093?pr=312#step:4:316

 Issues found in 1 input. Find details below.

[./schema-docs.md]:
Error:  file:///path/to/file.jsonl | Cannot find file: File not found. Check if file exists and path is correct

I tried adding all variations of exclusions to lycee.toml.

@codeboten @zeitlinger it looks like you all setup the lychee config in #319. Wondering if you can help.

Also, I tried running lycee locally with:

brew install mise
mise run lint:local-links

And get an error:

Checking links in file: .
dyld[13034]: Library not loaded: /opt/homebrew/opt/openssl@3/lib/libssl.3.dylib
  Referenced from: <2F244AE9-2C28-370B-9F07-7E43D0C8D425> /Users/jberg/.local/share/mise/installs/lychee/0.21.0/lychee
  Reason: tried: '/opt/homebrew/opt/openssl@3/lib/libssl.3.dylib' (no such file), '/System/Volumes/Preboot/Cryptexes/OS/opt/homebrew/opt/openssl@3/lib/libssl.3.dylib' (no such file), '/opt/homebrew/opt/openssl@3/lib/libssl.3.dylib' (no such file)
/Users/jberg/Library/Caches/mise/remote-http-tasks-cache/fd8ba6ca111fa22a8514840492e624f4b8f33d0d6907525c43bd5f2684a6eb91: line 13: 13034 Abort trap: 6           lychee --verbose --scheme file --include-fragments $usage_file

What is required to run locally? We should update CONTRIBUTING.md with whatever setup steps are needed.

[codeboten]

I installed lychee locally using brew install lychee. Probably worth adding a make target for local development though