docs: Remove CHANGELOG from never-ignored list (#8295)

It seems that the `CHANGELOG` files are not in the never ignored list
since npm/npm-packlist#61

## References

Also see the list at
[package.json#files](https://docs.npmjs.com/cli/v11/configuring-npm/package-json#files).

Author: mrazauskas

docs/lib/content/using-npm/developers.md

@@ -139,7 +139,6 @@ The following paths and files are never ignored, so adding them to
 
 * `package.json`
 * `README` (and its variants)
-* `CHANGELOG` (and its variants)
 * `LICENSE` / `LICENCE`
 
 If, given the structure of your project, you find `.npmignore` to be a