WASM example with Python server doesn't work

## System information

OS: Windows 10
Browsers: Opera GX & Firefox
Python: 3.9.10

## What you did

Build a project for WASM and tried to launch it with python server as instructed [here](https://github.com/bevyengine/bevy/tree/main/examples#build--run-2).

## What you expected to happen

App to run properly.

## What actually happened

App didn't run.
Debugger said that a `.js` file was sent as `text/plain`, hence could not be run as a module.

## Solutions

1. Remove python server from examples
2. Add additional information on [how to set it up](https://stackoverflow.com/questions/56940396/python-2-web-server-local-host-error-the-server-responded-with-a-non-javascript).
3. Keep this issue open so if someone gets this rare case they'll find the solution

## Additional context

Not everyone seems to have this issue, even with the same python version.

Running the `basic-http-server` worked just fine, so it's a python thing.

I'm not sure which solution is the right call.