Fixed a grammatical error.

[ghost]

Fixed a grammatical error

It appears that the verb improve should be in the to-infinitive form.
Hence, I corrected it by adding to before the verb improve.

Thanks a lot!!

[jsf-clabot]

Thank you for your submission, we really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.

[webpack-bot]

For maintainers only:

• This need to be documented (issue in webpack/webpack.js.org will be filed when merged)

[webpack-bot]

Thank you for your pull request! The most important CI builds succeeded, we’ll review the pull request soon.

[webpack-bot]

Hi @au711.

Just a little hint from a friendly bot about the best practice when submitting pull requests:

Don't submit pull request from your own master branch. It's recommended to create a feature branch for the PR.

You don't have to change it for this PR, just make sure to follow this hint the next time you submit a PR.

[ghost]

Is this PR going to be merged or not?

[sokra]

Yes. Thanks. I needed to wait for the CI to complete.