While browsing the examples on pyscript.net, I have noticed that the Visualization of Mandelbrot, Julia and Newton sets with NumPy and HTML5 canvas doesn't work and the reason why seems to be because of wrong importing of palettes.py.

This issue was caused by the absolute path set rather than having it as a relative path in pyscriptjs/examples/numpy_canvas_fractals.html.

Before:

- paths:
  - /palettes.py
  - /fractals.py

After:

- paths:
  - palettes.py
  - fractals.py

I have noticed this issue occurs in different examples that's why most people couldn't view the examples from REPL or pyscript.net. I will make a PR for this.