Add myself and pietro as maintainers for docs.rs (rust-lang#307)

* add myself and pietro as maintainers

* Remove inactive maintainers

Author: jyn514

src/infra/docs/docs-rs.md

@@ -2,7 +2,7 @@
 
 * Source code: [rust-lang/docs.rs][repo]
 * Hosted on: `docsrs.infra.rust-lang.org` (behind the bastion -- [how to connect][bastion-connect])
-* Maintainers: [onur][onur], [QuietMisdreavus][QuietMisdreavus]
+* Maintainers: [Joshua Nelson], [Pietro Albini]
 * [Instance metrics][grafana-instance] (only available to infra team members).
 * [Application metrics][grafana-app] (only available to infra team members).
 
@@ -112,5 +112,5 @@ Other operations (such as `list` and `remove`) are also supported.
 [grafana-instance]: https://grafana.rust-lang.org/d/rpXrFfKWz/instance-metrics?orgId=1&var-instance=docsrs.infra.rust-lang.org:9100
 [grafana-app]: https://grafana.rust-lang.org/d/-wWFg2cZz/docs-rs?orgId=1
 [bastion-connect]: https://github.com/rust-lang/infra-team/blob/master/docs/hosts/bastion.md#logging-into-servers-through-the-bastion
-[onur]: https://github.com/onur
-[QuietMisdreavus]: https://github.com/QuietMisdreavus
+[Joshua Nelson]: https://github.com/jyn514
+[Pietro Albini]: https://github.com/pietroalbini