r/aws_xray_indexing_rule: Add documentation.

Author: ewbankkit

website/docs/r/xray_indexing_rule.html.markdown

@@ -0,0 +1,95 @@
+---
+subcategory: "X-Ray"
+layout: "aws"
+page_title: "AWS: aws_xray_indexing_rule"
+description: |-
+    Manages an AWS X-Ray indexing rule.
+---
+
+# Resource: aws_xray_indexing_rule
+
+Manages an AWS X-Ray indexing rule.
+
+-> **Note:** Removing this resource from Terraform has no effect on the indedxing rule within AWS X-Ray.
+
+## Example Usage
+
+```terraform
+resource "aws_xray_indexing_rule" "example" {
+  name = "Default"
+
+  rule {
+    probabilistic {
+      desired_sampling_percentage = 0.66
+    }
+  }
+}
+```
+
+## Argument Reference
+
+This resource supports the following arguments:
+
+* `name` - (Required) Indexing rule name.
+* `rule` - (Required) Rule configuration. See [`rule` Block](#rule-block) below.
+* `region` - (Optional) Region where this resource will be [managed](https://docs.aws.amazon.com/general/latest/gr/rande.html#regional-endpoints). Defaults to the Region set in the [provider configuration](https://registry.terraform.io/providers/hashicorp/aws/latest/docs#aws-configuration-reference).
+
+### `rule` Block
+
+The `rule` block supports:
+
+* `probabilistic` - (Optional) Indexing rule configuration used to probabilistically sample traceIds. See [`probabilistic` Block](#probabilistic-block) below.
+
+### `probabilistic` Block
+
+The `probabilistic` block supports:
+
+* `desired_sampling_percentage` - (Required) Configured sampling percentage of traceIds.
+* `actual_sampling_percentage` - (Computed) Applied sampling percentage of traceIds.
+
+## Attribute Reference
+
+This resource exports no additional attributes.
+
+## Import
+
+In Terraform v1.12.0 and later, the [`import` block](https://developer.hashicorp.com/terraform/language/import) can be used with the `identity` attribute. For example:
+
+```terraform
+import {
+  to = aws_xray_indexing_rule.example
+  identity = {
+    name = "Default"
+  }
+}
+
+resource "aws_xray_indexing_rule" "example" {
+  ### Configuration omitted for brevity ###
+}
+```
+
+### Identity Schema
+
+#### Required
+
+* `name` (String) Indexing rule name.
+
+#### Optional
+
+* `account_id` (String) AWS Account where this resource is managed.
+* `region` (String) Region where this resource is managed.
+
+In Terraform v1.5.0 and later, use an [`import` block](https://developer.hashicorp.com/terraform/language/import) to import XRay Indexing Rules using `name`. For example:
+
+```terraform
+import {
+  to = aws_xray_indexing_rule.example
+  id = "Default"
+}
+```
+
+Using `terraform import`, import XRay Indexing Rules using `name`. For example:
+
+```console
+% terraform import aws_xray_indexing_rule.example Default
+```