Remove reference to ./public directory
Remove reference to ./public directory

This directory doesn't exist. It was probably meant to be ./build, but
webpack dev server actually doesn't load JavaScript files from ./build
either. It by default serves these files from memory (or temporary
directory perhaps) to support hot reload.

We can investigate if enabling writeToDisk [1] can make things less
confusing in the future.

[1] https://stackoverflow.com/questions/41928358/webpack-how-to-compile-write-on-disk-and-serve-static-content-js-css-using-w

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