Update JWT Audience value in appsettings.json

Changed the Audience for JWT config with Id "f3c0881b-c349-442a-ac24-d02da0798abd" from "sign-flow-gen.digitaldata.works" to "sign-flow.digitaldata.works" to reflect the correct audience for token validation.

src/DigitalData.Auth.API/appsettings.json

@@ -55,7 +55,7 @@
       {
         "Id": "f3c0881b-c349-442a-ac24-d02da0798abd",
         "Issuer": "auth.digitaldata.works",
-        "Audience": "sign-flow-gen.digitaldata.works",
+        "Audience": "sign-flow.digitaldata.works",
         "IsEncrypted": true,
         "Lifetime": "12:00:00"
       }