more asset generator options description

[vankop]

Feature to document
there is asset generator.outputPath that affects only output path
there is asset generator. publicPath that provides way to create publicPath for assets
related issues webpack/webpack#15656 webpack/webpack#15693

Author(s)

Additional information

[ ] I am willing to work on this issue and submit a pull request.

[chenxsan]

I think they are already documented here https://webpack.js.org/configuration/module/#rulegeneratorpublicpath?

[vankop]

ah yes, maybe add a link to this docs in assets section..