Fix opentelemetry example

[IvanFinochenko]

Issue https://github.com/zio/zio-telemetry/issues/832

[grouzen]

Hey! This is a good catch. But I doubt we need to merge this. I think we shouldn't overcomplicate the examples. The better option would be to add explicit instructions on changing the OtelSdk to use Jaeger and Seq providers instead of default ones. This approach will encourage people to play with examples' code to gain a better understanding. For this, we could just point to the specific lines in https://github.com/zio/zio-telemetry/blob/series/2.x/opentelemetry-example/src/main/scala/zio/telemetry/opentelemetry/example/otel/TracerProvider.scala#L37 and https://github.com/zio/zio-telemetry/blob/series/2.x/opentelemetry-example/src/main/scala/zio/telemetry/opentelemetry/example/otel/LoggerProvider.scala#L36, saying that a user needs to replace the stdout providers in https://github.com/zio/zio-telemetry/blob/series/2.x/opentelemetry-example/src/main/scala/zio/telemetry/opentelemetry/example/otel/OtelSdk.scala#L13 with the above ones. What do you think?

[IvanFinochenko]

Yes, I agree. I changed it new PR https://github.com/zio/zio-telemetry/pull/835