Improve diagram/visuals

[thompson-tomo]

Currently there is 3 pages:

• aws-lambda
  • https://opentelemetry.io/docs/specs/semconv/faas/aws-lambda/#api-gateway-request-proxy-lambda-tracing-passive
• http-spans
  • https://opentelemetry.io/docs/specs/semconv/http/http-spans/#http-client-retries-examples
• dotnet-network-traces/#examples
  • https://opentelemetry.io/docs/specs/semconv/dotnet/dotnet-network-traces/#examples

Which have code blocks which would be better suited to be an actual mermaid diagram or removed if it can not be determined what should be shown ie aws lambda doc.