Fix documentation template (#825)

* Fix documentation template

* Add changelog

.changelog/825.txt

@@ -0,0 +1,4 @@
+```release-note:bug
+Fix documentation of hcp_vault_secrets_app_iam_binding and hcp_vault_secrets_app_iam_policy
+
+```

docs/resources/vault_secrets_app_iam_binding.md

@@ -1,19 +1,41 @@
 ---
-page_title: "{{.Type}} {{.Name}} - {{.ProviderName}}"
+page_title: "Resource hcp_vault_secrets_app_iam_binding - terraform-provider-hcp"
 subcategory: "Cloud Platform"
 description: |-
-{{ .Description | plainmarkdown | trimspace | prefixlines "  " }}
+  Updates the Vault Secrets App IAM policy to bind a role to a new member. Existing bindings are preserved.
 ---
 
-# {{.Name}} ({{.Type}})
+# hcp_vault_secrets_app_iam_binding (Resource)
 
-{{ .Description | trimspace }}
+Updates the Vault Secrets App IAM policy to bind a role to a new member. Existing bindings are preserved.
 
 ~> **Note:** `hcp_vault_secrets_app_iam_binding` cannot be used in conjunction with
 `hcp_vault_secrets_app_iam_policy`.
 
 ## Example Usage
 
-{{ tffile "examples/resources/hcp_vault_secrets_app_iam_binding/resource.tf" }}
+```terraform
+resource "hcp_service_principal" "sp" {
+  name = "example-sp"
+}
 
-{{ .SchemaMarkdown | trimspace }}
+resource "hcp_vault_secrets_app" "example" {
+  app_name    = "example-app-name"
+  description = "My new app!"
+}
+
+resource "hcp_vault_secrets_app_iam_binding" "example" {
+  resource_name = hcp_vault_secrets_app.example.resource_name
+  principal_id  = hcp_service_principal.sp.resource_id
+  role          = "roles/secrets.app-secret-reader"
+}
+```
+
+<!-- schema generated by tfplugindocs -->
+## Schema
+
+### Required
+
+- `principal_id` (String) The principal to bind to the given role.
+- `resource_name` (String) The app's resource name in the format secrets/project/<project ID>/app/<app Name>.
+- `role` (String) The role name to bind to the given principal.

docs/resources/vault_secrets_app_iam_policy.md

@@ -1,11 +1,11 @@
 ---
-page_title: "{{.Type}} {{.Name}} - {{.ProviderName}}"
+page_title: "Resource hcp_vault_secrets_app_iam_policy - terraform-provider-hcp"
 subcategory: "Cloud Platform"
 description: |-
-{{ .Description | plainmarkdown | trimspace | prefixlines "  " }}
+  Sets the Vault Secrets App IAM policy and replaces any existing policy.
 ---
 
-# {{.Name}} ({{.Type}})
+# hcp_vault_secrets_app_iam_policy (Resource)
 
 !> **Be Careful!** You can accidentally lock yourself out of your vault secrets app using
 this resource. Deleting a hcp_vault_secrets_app_iam_policy removes access from anyone
@@ -14,19 +14,54 @@ If you are trying to additively give permissions to the app, prefer using
 `hcp_vault_secrets_app_iam_binding`. If you do use this resource, it is recommended to
 import the policy before applying the change.
 
-{{ .Description | trimspace }}
+Sets the Vault Secrets App IAM policy and replaces any existing policy.
 
 ~> **Note:** `hcp_vault_secrets_app_iam_policy` can not be used in conjunction with
 `hcp_vault_secrets_app_iam_binding`.
 
 ## Example Usage
 
-{{ tffile "examples/resources/hcp_project_iam_policy/resource.tf" }}
+```terraform
+data "hcp_iam_policy" "example" {
+  bindings = [
+    {
+      role = "roles/contributor"
+      principals = [
+        "example-user-id-1",
+        "example-group-id-1",
+        "example-sp-1"
+      ]
+    },
+  ]
+}
 
-{{ .SchemaMarkdown | trimspace }}
+resource "hcp_project" "my_project" {
+  name = "example"
+}
+
+resource "hcp_project_iam_policy" "project_policy" {
+  project_id  = hcp_project.my_project.resource_id
+  policy_data = data.hcp_iam_policy.example.policy_data
+}
+```
+
+<!-- schema generated by tfplugindocs -->
+## Schema
+
+### Required
+
+- `policy_data` (String) The policy to apply.
+- `resource_name` (String) The app's resource name in the format secrets/project/<project ID>/app/<app Name>.
+
+### Read-Only
+
+- `etag` (String) The etag captures the existing state of the policy.
 
 ## Import
 
 Import is supported using the following syntax:
 
-{{ codefile "shell" "examples/resources/hcp_vault_secrets_app_iam_policy/import.sh" }}
+```shell
+# Vault Secrets App IAM Policy can be imported by specifying the resource name of the app
+terraform import hcp_vault_secrets_app_iam_policy.example secrets/project/41d107a7-eea6-4b5e-8481-508ab29e2b07/app/example-app-name
+```