fix(ai): missing export (#3910)

Author: tgenaitay

tutorials/building-ai-application-function-calling/index.mdx

@@ -232,14 +232,19 @@ if __name__ == "__main__":
    export SCALEWAY_API_KEY="your-api-key-here"
    ```
 
-2. Run the application:
+2. Set your Base URL for OpenAI client:
+   ```
+   export SCALEWAY_INFERENCE_ENDPOINT_URL="your-inference-endpoint-here"
+   ```
+
+3. Run the application:
    ```
    python main.py
    ```
 
-3. Try some example queries:
-   - "What flights are available from CDG to LHR tomorrow?"
-   - "Show me morning flights from Paris to London on November 1st"
+4. Try some example queries:
+   - "What flights are available from CDG to LHR on November 1st?"
+   - "Show me morning flights from CDG to LHR on November 1st"
    - "Are there any afternoon flights from CDG to LHR on 2024-11-01?"
 
 ## How it works