Update code to sdk 0.5.0

Update code to azure-sdk-for-go/sdk/ai/azopenai 0.5.0

Author: qt-luigi

articles/ai-services/openai/includes/go.md

@@ -40,6 +40,7 @@ import (
 	"os"
 
 	"github.com/Azure/azure-sdk-for-go/sdk/ai/azopenai"
+	"github.com/Azure/azure-sdk-for-go/sdk/azcore"
 	"github.com/Azure/azure-sdk-for-go/sdk/azcore/to"
 )
 
@@ -54,11 +55,7 @@ func main() {
 		return
 	}
 
-	keyCredential, err := azopenai.NewKeyCredential(azureOpenAIKey)
-
-	if err != nil {
-		// TODO: handle error
-	}
+	keyCredential := azcore.NewKeyCredential(azureOpenAIKey)
 
 	client, err := azopenai.NewClientWithKeyCredential(azureOpenAIEndpoint, keyCredential, nil)
 
@@ -67,10 +64,10 @@ func main() {
 	}
 
 	resp, err := client.GetCompletions(context.TODO(), azopenai.CompletionsOptions{
-		Prompt:       []string{"What is Azure OpenAI, in 20 words or less"},
-		MaxTokens:    to.Ptr(int32(2048)),
-		Temperature:  to.Ptr(float32(0.0)),
-		Deployment: modelDeploymentID,
+		Prompt:         []string{"What is Azure OpenAI, in 20 words or less"},
+		MaxTokens:      to.Ptr(int32(2048)),
+		Temperature:    to.Ptr(float32(0.0)),
+		DeploymentName: &modelDeploymentID,
 	}, nil)
 
 	if err != nil {