docs: update aws ec2 auth step
docs: update aws ec2 auth step

hashicorp/vault,hartsock/vault,hashicorp/vault,kingland/vault,Aloomaio/vault,quixoten/vault,rnaveiras/vault,rnaveiras/vault,joelthompson/vault,mgk/vault,mgk/vault,kingland/vault,quixoten/vault,joelthompson/vault,hartsock/vault,rnaveiras/vault,joelthompson/vault,rnaveiras/vault,joelthompson/vault,Aloomaio/vault,hashicorp/vault,hashicorp/vault,Aloomaio/vault,hashicorp/vault,kingland/vault,quixoten/vault,mgk/vault,hashicorp/vault,rnaveiras/vault,quixoten/vault,hartsock/vault,hartsock/vault,Aloomaio/vault,hartsock/vault,mgk/vault,kingland/vault,kingland/vault