Merge pull request hashicorp#33643 from posquit0/sfn-alias-docs

Refine docs for aws_sns_alias resource

website/docs/r/sfn_alias.html.markdown

@@ -41,21 +41,17 @@ resource "aws_sfn_alias" "my_sfn_alias" {
 
 ## Argument Reference
 
-The following arguments are required:
+This resource supports the following arguments:
 
 * `name` - (Required) Name for the alias you are creating.
 * `description` - (Optional) Description of the alias.
 * `routing_configuration` - (Required) The StateMachine alias' route configuration settings. Fields documented below
 
 `routing_configuration` supports the following arguments:
 
-* `state_machine_version_arn` - (Required) A version of the state machine.
+* `state_machine_version_arn` - (Required) The Amazon Resource Name (ARN) of the state machine version.
 * `weight` - (Required) Percentage of traffic routed to the state machine version.
 
-The following arguments are optional:
-
-* `optional_arg` - (Optional) Concise argument description. Do not begin the description with "An", "The", "Defines", "Indicates", or "Specifies," as these are verbose. In other words, "Indicates the amount of storage," can be rewritten as "Amount of storage," without losing any information.
-
 ## Attribute Reference
 
 This resource exports the following attributes in addition to the arguments above: