Github Pages deployment - documentation deprecation

[ilovewine]

Version

5.0.0-alpha.3

Environment info

This is a deprecation regarding documentation.

Steps to reproduce

• go to https://cli.vuejs.org/guide/deployment.html#github-pages
• scroll down to step 5

What is expected?

.travis.yml should contain correct options

What is actually happening?

skip_cleanup is deprecated

---

According to this article: https://blog.travis-ci.com/2019-08-27-deployment-tooling-dpl-v2-preview-release - skip_cleanup is deprecated. There should be cleanup instead of skip_cleanup.

I know it's a trivial defect, but I think it's worth keeping the documentation up to date ;)

[fangbinwei]

#5952

related travis-ci/docs-travis-ci-com#2799