Remove mention of making changes to the website in the post-review tasks for the author

[Batalex]

https://www.pyopensci.org/software-peer-review/how-to/author-guide.html#my-package-is-approved-now-what

We will ask you to add your package to the pyOpenSci website. This will give your package more visibility in the community as a vetted pyOpenSci tool. * We also will ask you (and those who reviewed your package) to add yourself to our list of pyOpenSci community members!

The process is now automated with a GH action.

I'll submit a PR with a 👍 on this issue.

[lwasser]

that would be wonderful - thank you for catching this @Batalex and for being willing to create a pr!