Fix broken links

[danelson]

Fixes #5030

Changes

Updated broken links that had a base uri of https://github.com/open-telemetry/opentelemetry-specification

Merge requirement checklist

• CONTRIBUTING guidelines followed (nullable enabled, static analysis, etc.)
• Unit tests added/updated
• Appropriate CHANGELOG.md files updated for non-trivial changes
• Changes in public API reviewed (if applicable)

[codecov]

Codecov Report

Merging #5033 (e36f7b8) into main (0a989a9) will increase coverage by 0.15%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #5033      +/-   ##
==========================================
+ Coverage   83.36%   83.52%   +0.15%     
==========================================
  Files         296      296              
  Lines       12440    12440              
==========================================
+ Hits        10371    10390      +19     
+ Misses       2069     2050      -19     

Flag	Coverage Δ
unittests	83.52% <ø> (+0.15%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
src/OpenTelemetry.Api/Trace/SpanAttributes.cs	100.00% <ø> (ø)
...ometheus.HttpListener/Internal/PrometheusMetric.cs	71.75% <ø> (ø)
...ion.AspNetCore/AspNetCoreInstrumentationOptions.cs	100.00% <ø> (ø)
...tation.AspNetCore/Implementation/HttpInListener.cs	91.87% <ø> (ø)
...try.Instrumentation.GrpcNetClient/GrpcTagHelper.cs	95.65% <ø> (ø)
...mentation.Http/HttpClientInstrumentationOptions.cs	100.00% <ø> (ø)
...ation.SqlClient/SqlClientInstrumentationOptions.cs	98.87% <ø> (ø)
src/OpenTelemetry/Resources/ResourceBuilder.cs	91.93% <ø> (ø)
...enTelemetry/Resources/ResourceBuilderExtensions.cs	100.00% <ø> (ø)
src/Shared/SpanHelper.cs	100.00% <ø> (ø)

... and 6 files with indirect coverage changes

[vishweshbankwar]

Thanks @danelson!

[danelson]

@vishweshbankwar no problem. Thanks for your review and good idea to use the domain specific links where applicable. I added your changes.