Explain that `namespaceName` must be a FQDN to Service Bus (#2651)

Signed-off-by: ItalyPaleAle <43508+ItalyPaleAle@users.noreply.github.com>

daprdocs/content/en/reference/components-reference/supported-bindings/servicebusqueues.md

@@ -53,7 +53,7 @@ The above example uses secrets as plain strings. It is recommended to use a secr
 | Field              | Required | Binding support |  Details | Example |
 |--------------------|:--------:|-----------------|----------|---------|
 | `connectionString` | Y | Input/Output | The Service Bus connection string. Required unless using Azure AD authentication. | `"Endpoint=sb://************"` |
-| `namespaceName`| N | Input/Output | Parameter to set the name of the Service Bus namespace. Required if using Azure AD authentication. | `"namespace"` |
+| `namespaceName`| N | Input/Output | Parameter to set the address of the Service Bus namespace, as a fully-qualified domain name. Required if using Azure AD authentication. | `"namespace.servicebus.windows.net"` |
 | `queueName` | Y | Input/Output | The Service Bus queue name. Queue names are case-insensitive and will always be forced to lowercase. | `"queuename"` |
 | `ttlInSeconds` | N | Output | Parameter to set the default message [time to live](https://docs.microsoft.com/azure/service-bus-messaging/message-expiration). If this parameter is omitted, messages will expire after 14 days. See [also](#specifying-a-ttl-per-message) | `86400` |
 | `maxRetriableErrorsPerSec` | N | Input | Maximum number of retriable errors that are processed per second. If a message fails to be processed with a retriable error, the component adds a delay before it starts processing another message, to avoid immediately re-processing messages that have failed. Default: `10` | `10` |
@@ -86,8 +86,10 @@ spec:
     value: "***"
   - name: azureClientSecret
     value: "***"
-  - name: namespaceName # Required when using Azure Authentication.
-    value: "<SERVICEBUS_NAMESPACE>"
+  - name: namespaceName
+    # Required when using Azure Authentication.
+    # Must be a fully-qualified domain name
+    value: "servicebusnamespace.servicebus.windows.net"
   - name: queueName
     value: queue1
   - name: ttlInSeconds

daprdocs/content/en/reference/components-reference/supported-pubsub/setup-azure-servicebus.md

@@ -69,7 +69,7 @@ The above example uses secrets as plain strings. It is recommended to use a secr
 | Field              | Required | Details | Example |
 |--------------------|:--------:|---------|---------|
 | `connectionString`   | Y  | Shared access policy connection-string for the Service Bus. Required unless using Azure AD authentication. | "`Endpoint=sb://{ServiceBusNamespace}.servicebus.windows.net/;SharedAccessKeyName={PolicyName};SharedAccessKey={Key};EntityPath={ServiceBus}`"
-| `namespaceName`| N | Parameter to set the name of the Service Bus namespace. Required if using Azure AD authentication. | `"namespace"` |
+| `namespaceName`| N | Parameter to set the address of the Service Bus namespace, as a fully-qualified domain name. Required if using Azure AD authentication. | `"namespace.servicebus.windows.net"` |
 | `consumerID`         | N        | Consumer ID a.k.a consumer tag organizes one or more consumers into a group. Consumers with the same consumer ID work as one virtual consumer, i.e. a message is processed only once by one of the consumers in the group. If the consumer ID is not set, the dapr runtime will set it to the dapr application ID. |
 | `timeoutInSec`       | N  | Timeout for sending messages and for management operations. Default: `60` |`30`
 | `handlerTimeoutInSec`| N  |  Timeout for invoking the app's handler. Default: `60` | `30`
@@ -103,8 +103,10 @@ spec:
   type: pubsub.azure.servicebus
   version: v1
   metadata:
-  - name: namespaceName # Required when using Azure Authentication.
-    value: "servicebusnamespace"
+  - name: namespaceName
+    # Required when using Azure Authentication.
+    # Must be a fully-qualified domain name
+    value: "servicebusnamespace.servicebus.windows.net"
   - name: azureTenantId
     value: "***"
   - name: azureClientId