terraform-docs: automated action

Author: github-actions[bot]

README.md

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+<!-- BEGIN_TF_DOCS -->
+# terraform-aws-grafana
+
+## Requirements
+
+| Name | Version |
+|------|---------|
+| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.8.4 |
+
+## Providers
+
+No providers.
+
+## Modules
+
+No modules.
+
+## Resources
+
+No resources.
+
+## Inputs
+
+No inputs.
+
+## Outputs
+
+No outputs.
+<!-- END_TF_DOCS -->