Update ruby_example.rb
Update ruby_example.rb

"/sso/" is no longer needed in embed urls and it is not best practice to include "/sso". "/embed/sso" redirects to "/embed".
looker/looker_embed_sso_examples,looker/looker_embed_sso_examples,looker/looker_embed_sso_examples,looker/looker_embed_sso_examples,looker/looker_embed_sso_examples,looker/looker_embed_sso_examples,looker/looker_embed_sso_examples