Problem Statement

I noticed the rolldice example has a single-word name for the meter and tracer:

I haven't checked other examples, but IMO we should consider doing this across all of them.

Proposed Solution

Since many users will use this as a starting point for their code, would it make more sense to use a "real" scope name? E.g. go.opentelemetry.io/otel/example/dice?

Alternatives

Keep simpler names for samples