Added note on dependencies

Author: snobu

v2functions/http-trigger-onnx-model/readme.md

@@ -25,6 +25,8 @@ onnxruntime==1.1.0
 numpy==1.18.1
 ```
 
+Make sure you have these in your `requirements.txt` at the root of your function app.
+
 ## Configuration
 As specified in `functions.json`, this function is triggered by an HTTP request. It expects a POST request with raw image bytes (JPEG/PNG/whatever the Pillow library can open). Output is an HTTP response with the resulting style transferred image (JPEG encoded).
 
@@ -90,4 +92,4 @@ az webapp config appsettings set \
 [1]: https://httpie.org/
 [2]: https://iterm2.com/documentation-images.html
 [3]: https://github.com/onnx/models/tree/master/vision/style_transfer/fast_neural_style
-[4]: https://github.com/pytorch/examples/tree/master/fast_neural_style#models
+[4]: https://github.com/pytorch/examples/tree/master/fast_neural_style#models