fix(fetchUsers): call displayAvatarURL

[papaia]

User#displayAvatarURL is a method, but is not being called, which causes the output to not include avatars.

Additionally, use the BOT_TOKEN var instead of grabbing from env again, and use User#tag getter instead of manually doing it, and remove unused Writable.

[netlify[bot]]

Deploy request for tph pending review.

Review with commit d0996c2fccbce26df2e66fa413c172d2cbf4428d

https://app.netlify.com/sites/tph/deploys

[veksen]

thank you 🎉

[papaia]

My pleasure :)