[STG94] Updated STG94 Files Readme (#28201)

* added swagger

* updated readme

* small fix

specification/storage/data-plane/Microsoft.FileStorage/readme.md

@@ -25,7 +25,7 @@ These are the global settings for the FileStorage API.
 
 ``` yaml
 openapi-type: data-plane
-tag: package-2024-05
+tag: package-2024-08
 use-internal-constructors: true
 add-credentials: true
 ```
@@ -129,6 +129,15 @@ input-file:
 - stable/2024-05-04/file.json
 ```
 
+### Tag: package-2024-08
+
+These settings apply only when `--tag=package-2024-08` is specified on the command line.
+
+``` yaml $(tag) == 'package-2024-08'
+input-file:
+- stable/2024-08-04/file.json
+```
+
 ### Suppression
 ``` yaml
 directive: