msg branch uses deprecated way of setting footer

at line 30,56,69:
```
const curPage = await msg.channel.send({
    embeds: [pages[page].setFooter(`Page ${page + 1} / ${pages.length}`)],
    components: [row],
  });
  ```
  should be something like this:
  
```
const curPage = await msg.channel.send({
    embeds: [pages[page].setFooter({text:`Page ${page + 1} / ${pages.length}`})],
    components: [row],
  });
  ```
  