Wrong timestamp for span event

[sungam3r]

A Span Event can be thought of as a structured log message (or annotation) on a Span, typically used to denote a meaningful, singular point in time during the Span’s duration.

But in example from https://opentelemetry.io/docs/concepts/signals/traces/#tracing-in-opentelemetry timestamp of the second event is greater than end_time of the span itself.

[Neilblaze]

@cartermp Can I take this up? I think replacing the positions of those timestamps will fix the issue. Thanks! :)

[svrnm]

@Neilblaze, sure, please go ahead and raise a PR