Added dall-e payload instructions

Author: D-K-P

docs/examples/dall-e3-generate-image.mdx

@@ -29,7 +29,6 @@ export const generateContent = task({
     maxAttempts: 3, // Retry up to 3 times
   },
   run: async ({ theme, description }: Payload) => {
-
     // Generate text
     const textResult = await openai.chat.completions.create({
       model: "gpt-4o",
@@ -64,4 +63,15 @@ function generateTextPrompt(theme: string, description: string): any {
 function generateImagePrompt(theme: string, description: string): any {
   return `Theme: ${theme}\n\nDescription: ${description}`;
 }
-```
+```
+
+## Testing
+
+You can test this task by running it with the following payload:
+
+```json
+{
+  "theme": "A beautiful sunset",
+  "description": "A sunset over the ocean with a tiny yacht in the distance."
+}
+```