opentelemetry-go should set the resource attribute telemetry.sdk.name to opentelemetry

[justinfoote]

According to the spec:

The default OpenTelemetry SDK provided by the OpenTelemetry project MUST set telemetry.sdk.name to the value opentelemetry.

But the implementation in opentelemetry-go sets the value to "opentelemetry-go":

func (TelemetrySDK) Detect(context.Context) (*Resource, error) {
	return NewWithAttributes(
		semconv.TelemetrySDKNameKey.String("opentelemetry-go"),
		semconv.TelemetrySDKLanguageKey.String("go"),
		semconv.TelemetrySDKVersionKey.String(opentelemetry.Version()),
	), nil
}