docs: Use AWS SDK v3 in example

Author: j15e

instrumentation/aws_sdk/example/Gemfile

@@ -2,7 +2,10 @@
 
 source 'https://rubygems.org'
 
-gem 'aws-sdk'
+gem 'aws-sdk-core', '~> 3'
+gem 'aws-sdk-sns', '~> 1'
+# AWS SDK core needs an XML library
+gem 'rexml'
 gem 'opentelemetry-api'
 gem 'opentelemetry-instrumentation-aws_sdk'
 gem 'opentelemetry-sdk'

instrumentation/aws_sdk/example/trace_demonstration.rb

@@ -13,8 +13,10 @@
 ENV['OTEL_TRACES_EXPORTER'] ||= 'console'
 
 OpenTelemetry::SDK.configure do |c|
-  c.use 'OpenTelemetry::Instrumentation::AwsSdk', suppress_internal_instrumentation: false
+  c.use 'OpenTelemetry::Instrumentation::AwsSdk'
 end
 
-sns = Aws::SNS::Client.new
+# For more examples and options, see also https://docs.aws.amazon.com/sdk-for-ruby/v3/developer-guide/observability.html 
+otel_provider = Aws::Telemetry::OTelProvider.new
+sns = Aws::SNS::Client.new(telemetry_provider: otel_provider)
 sns.publish message: 'ruby sending message to sns'