Typo: Corrected same typo in 2 locations (on-premise to on-premises) (#13402) (#16802)

* Fixed 2 typos on-premise to on-premises.

* Added changelog file.

* Removed 13402.txt file from changelog.

* Update website/content/docs/secrets/terraform.mdx

Co-authored-by: hghaf099 <[email protected]>

Co-authored-by: cr48 <[email protected]>
Co-authored-by: hghaf099 <[email protected]>

Author: 3 people

website/content/docs/secrets/terraform.mdx

@@ -16,7 +16,7 @@ This page will show a quick start for this backend. For detailed documentation
 on every path, use `vault path-help` after mounting the backend.
 
 ~> **Terraform Enterprise Support:** this secret engine supports both Terraform
-Cloud ([app.terraform.io](https://app.terraform.io)) as well as on-premise
+Cloud ([app.terraform.io](https://app.terraform.io)) as well as on-prem
 Terraform Enterprise. Any version requirements will be documented alongside the
 features that require them, if any.