📝 Documentation: Explain "INSERT_CODECOV_TOKEN_HERE" in hydration script

[JoshuaKGoldberg]

Bug Report Checklist

• [X] I have pulled the latest main branch of the repository.
• [X] I have searched for related issues and found none that matched my issue.

Overview

441 added a hydration script that copies all of this template's goodness into an existing repository. Part of that includes copying over the top section of a README.md, including the Codecov badge:

https://github.com/JoshuaKGoldberg/template-typescript-node-package/blob/791332de33d8c89c62c689b9ed5ca7c10234fcb4/README.md#L13-L15

Note that that includes a token=.... Do we need that token? I don't remember why.

At any rate, I left that token as _INSERT_CODECOV_TOKEN_HERE_ in the hydration template 😂:

https://github.com/JoshuaKGoldberg/template-typescript-node-package/blob/791332de33d8c89c62c689b9ed5ca7c10234fcb4/src/hydrate/writeReadme.ts#L84

One of the following things is true:

• That token is unnecessary and should be removed
• Documentation should be updated to mention where to get your token

...accepting PRs for whichever of those is right!

Additional Info

No response

[github-actions[bot]]

:tada: This is included in version v1.28.46 :tada:

The release is available on:

• GitHub releases
• npm package (@latest dist-tag)

Cheers! 📦🚀