docs(readme): update format (#317)

README.md

@@ -435,7 +435,6 @@ import (
 )
 
 func main() {
-
 	config := openai.DefaultAzureConfig("your Azure OpenAI Key", "https://your Azure OpenAI Endpoint")
 	// If you use a deployment name different from the model name, you can customize the AzureModelMapperFunc function
 	// config.AzureModelMapperFunc = func(model string) string {
@@ -458,7 +457,6 @@ func main() {
 			},
 		},
 	)
-
 	if err != nil {
 		fmt.Printf("ChatCompletion error: %v\n", err)
 		return
@@ -466,6 +464,7 @@ func main() {
 
 	fmt.Println(resp.Choices[0].Message.Content)
 }
+
 ```
 </details>