New review comment by sgn on void-packages repository

https://github.com/void-linux/void-packages/pull/23576#discussion_r455421617

Comment:
Previously, I suggest this command with additional comment about filter out header and footer.
I didn't look hard into it. I still think we should take out header and footer because they'll be changed over time, but the EULA will be changed less often.

```sh
curl -L https://www.spotify.com/us/legal/end-user-agreement/ |
w3m -dump -I utf-8 -T text/html |
sed -n '/Spotify Terms and Conditions of Use/,/^USA$/p' >EULA
```
I think this one should EULA, I'm not native English speaker, so ...

Anyway, my personal preference is no `\` at the end.
If the line end with `|`, sh/bash knows that we haven't finished communicate with it.