Docs for Jaeger collector exporter are wrong

[genebean]

The docs at https://github.com/open-telemetry/opentelemetry-ruby/tree/master/exporter/jaeger don't include the /api/traces path that is required via https://github.com/open-telemetry/opentelemetry-ruby/blob/ed28a6bc2a7ce7cfcad9c2940c596a651d9a6782/exporter/jaeger/lib/opentelemetry/exporter/jaeger/collector_exporter.rb#L18

Either the docs are wrong or the initial setting of the endpoint needs updating to append that path automatically.

[ericmustin]

i think a few exporter docs have issues at the moment actually , otlp collector exporter has a code example using incorrect args i believe https://github.com/open-telemetry/opentelemetry-ruby/tree/master/exporter/otlp#how-do-i-get-started

Maybe we should group these all as one chunk of cleanup work

[genebean]

#427 will take care of the original issue listed here but does not address the otlp exporter docs.

[rydzykje]

Will be happy to help with that :)

[fbogsany]

Thanks @rydzykje - I've assigned this to you.

[inductor]

@rydzykje what's up

[vsrnth]

opened #986 to fix the otlp exporter docs.

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