Merge pull request #964 from apiraino/update-prio-docs

Update prioritization docs

Author: Urgau

src/triagebot/requesting-prioritization.md

@@ -1,6 +1,13 @@
 # Requesting Prioritization
 
-Users can request an issue to be prioritized by the Prioritization WG.
+Users can request an issue to be prioritized. Prioritization means that the relevant team (T-compiler, T-rustdoc, T-libs) will have a look at the issue and assess its priority.
+
+This procedure is usually reserved to *regressions*, the Rust project takes regressions seriously and these have usually priority above all the rest. When a regression is filed using the dedicated [GitHub issue template][gh-regression-tpl], a prioritization of that issue is automatically requested.
+
+To learn more about this procedure, please visit the [prioritization] documentation.
+
+[gh-regression-tpl]: https://github.com/rust-lang/rust/blob/master/.github/ISSUE_TEMPLATE/regression.md
+[prioritization]: ../compiler/prioritization.md
 
 ## Usage
 
@@ -10,9 +17,9 @@ On repositories configured for prioritization, any user can post a comment with:
 @rustbot prioritize
 ```
 
-which will add the `I-prioritize` label to the issue to notify the [Prioritization WG] that the issue needs prioritization.
+which will add the `I-prioritize` label to the issue and send a notification on [Zulip][prio-alerts].
 
-[Prioritization WG]: https://www.rust-lang.org/governance/teams/compiler#Prioritization%20working%20group
+[prio-alerts]: https://rust-lang.zulipchat.com/#narrow/channel/245100-t-compiler.2Fprioritization.2Falerts/topic/.23147831.20Redundant.20bounds.20check.20when.20indexing.20array.20with.20enu.E2.80.A6/with/545925945
 
 ## Configuration