[AI] [Inference] Fix #30554 (#30609)

### Packages impacted by this PR
@azure-rest/ai-inference

### Issues associated with this PR
#30554 

### Describe the problem that is addressed by this PR
Fix constructor syntax in sample

### What are the possible designs available to address the problem? If
there are more than one possible design, why was the one in this PR
chosen?


### Are there test cases added in this PR? _(If not, why?)_


### Provide a list of related PRs _(if any)_


### Command used to generate this PR:**_(Applicable only to SDK release
request PRs)_

### Checklists
- [ ] Added impacted package name to the issue description
- [ ] Does this PR needs any fixes in the SDK Generator?** _(If so,
create an Issue in the
[Autorest/typescript](https://github.com/Azure/autorest.typescript)
repository and link it here)_
- [ ] Added a changelog (if necessary)

sdk/ai/ai-inference-rest/samples/v1-beta/typescript/src/toolCall.ts

@@ -39,7 +39,7 @@ const getCurrentWeather = {
 export async function main() {
   console.log("== Chat Completions Sample With Functions ==");
 
-  const client = ModelClient(endpoint, new DefaultAzureCredential()));
+  const client = ModelClient(endpoint, new DefaultAzureCredential());
   const response = await client.path("/chat/completions").post({
     body: {
       messages: [{ role: "user", content: "What's the weather like in Boston?" }],