docs - fix aws iam credential example (#5435)
docs - fix aws iam credential example (#5435)


capitalone/cloud-custodian,alfredgamulo/cloud-custodian,alfredgamulo/cloud-custodian,thisisshi/cloud-custodian,thisisshi/cloud-custodian,alfredgamulo/cloud-custodian,capitalone/cloud-custodian,thisisshi/cloud-custodian,capitalone/cloud-custodian,capitalone/cloud-custodian