Obsolete paragraph regarding versioning in Webpack Encore

[royklutman]

Since Webpack Encore now generates a config/packages/assets.yaml file containing the settings needed to load assets from the manifest.json file (reference):

# config/packages/assets.yaml
framework:
    assets:
        json_manifest_path: '%kernel.project_dir%/public/build/manifest.json'

You don't actually have to manually add json_manifest_path to config/packages/framework.yaml anymore, so the following paragraph becomes obsolete: http://symfony.com/doc/current/frontend/encore/versioning.html#loading-assets-from-the-manifest-json-file

I wouldn't mind creating a PR to remove or edit the paragraph myself, but my english is subpar sadly.

[weaverryan]

You're totally right! And we do assume you're using Flex for the 4.0 branch and higher. Your English seems actually pretty great to me :). If you did open a PR, if there were any English tweaks needed, we can make them easily - opening the PR and thinking about how the information should be organized is the hard part :).

[javiereguiluz]

Fixed by #10190.