Revert Acronyms.yml and remove USSEC/USNAT from cloud_name description

Co-authored-by: tanmaya-panda1 <108695755+tanmaya-panda1@users.noreply.github.com>

Author: Copilot

pipeline/outputs/azure_kusto.md

@@ -60,7 +60,7 @@ By default, Kusto will insert incoming ingestion data into a table by inferring
 | `unify_tag`                            | Optional. This creates a single buffer file when the buffering mode is `On`. | `On`                           |
 | `client_id`                            | Required if `managed_identity_client_id` isn't set. The client ID of the AAD registered application.                                                  | _none_                         |
 | `client_secret`                        | Set the client secret (Application Password) of the AAD application used for authentication.                                                          | _none_                         |
-| `cloud_name`                           | Set the Azure cloud environment. Supported values: `AzureCloud` (default), `AzureChinaCloud`, `AzureUSGovernmentCloud`. For private clouds (USSEC, USNAT, and so on), set `cloud_login_host`, `cloud_kusto_scope`, and `cloud_kusto_resource` instead. | `AzureCloud`                   |
+| `cloud_name`                           | Set the Azure cloud environment. Supported values: `AzureCloud` (default), `AzureChinaCloud`, `AzureUSGovernmentCloud`. For private clouds, set `cloud_login_host`, `cloud_kusto_scope`, and `cloud_kusto_resource` instead. | `AzureCloud`                   |
 | `cloud_login_host`                     | Custom OAuth login host for private/sovereign clouds (for example, `login.microsoftonline.eaglex.ic.gov`). When set, `cloud_kusto_scope` and `cloud_kusto_resource` must also be provided. | _none_                         |
 | `cloud_kusto_scope`                    | Custom Kusto OAuth scope for private/sovereign clouds (for example, `https://help.kusto.core.eaglex.ic.gov/.default`). When set, `cloud_login_host` and `cloud_kusto_resource` must also be provided. | _none_                         |
 | `cloud_kusto_resource`                 | Custom Kusto IMDS resource URL for private/sovereign clouds (for example, `https://api.kusto.core.eaglex.ic.gov/`). When set, `cloud_login_host` and `cloud_kusto_scope` must also be provided. | _none_                         |

vale-styles/FluentBit/Acronyms.yml

@@ -141,8 +141,6 @@ exceptions:
   - URI
   - URL
   - USB
-  - USNAT
-  - USSEC
   - UTC
   - UTF
   - UUID