Added Go code example to Quickstart

quickstart.mdx

@@ -118,6 +118,8 @@ the basic components of a Modus app and how to deploy it to Hypermode.
     Go to the `index.ts` file and locate the `generateText` function. Modify the function
     to only respond like a surfer, like this:
 
+    <CodeGroup>
+
     ```ts AssemblyScript
     export function generateText(text: string): string {
       const model = models.getModel<OpenAIChatModel>("text-generator")
@@ -135,6 +137,32 @@ the basic components of a Modus app and how to deploy it to Hypermode.
     }
     ```
 
+    ```ts Go
+    func GenerateText(text string) (string, error) {
+      model, err := models.GetModel[openai.ChatModel]("text-generator")
+      if err != nil {
+          return "", err
+      }
+
+      input, err := model.CreateInput(
+          openai.NewSystemMessage("You are a helpful assistant. Only respond using surfing analogies and metaphors."),
+          openai.NewUserMessage(text),
+      )
+      if err != nil {
+          return "", err
+      }
+
+      output, err := model.Invoke(input)
+      if err != nil {
+          return "", err
+      }
+
+      return strings.TrimSpace(output.Choices[0].Message.Content), nil
+    }
+    ```
+
+    </CodeGroup>
+
     Save the file and push an update to your Git repo. Hypermode automatically redeploys
     whenever you push an update to the target branch in your Git repo. Go back to the Hypermode Console
     and run the same query as before. You should see the response now uses surfing analogies!