Clean up the paragraph about aliases for pinging the notification groups (#743)

* Clean up the paragraph about aliases for pinging the notification groups

* Add windows and arm command invocations

Co-authored-by: Santiago Pastorino <spastorino@gmail.com>

Co-authored-by: Santiago Pastorino <spastorino@gmail.com>

Author: LeSeulArtichaut

src/notification-groups/about.md

@@ -62,14 +62,18 @@ group. For example:
 ```text
 @rustbot ping llvm
 @rustbot ping cleanup-crew
+@rustbot ping windows
+@rustbot ping arm
 ```
 
-To make these commands shorter and easier to remember, there are aliases,
-defined in the [`triagebot.toml`] file. For example:
+To make some commands shorter and easier to remember, there are aliases,
+defined in the [`triagebot.toml`] file. For example, all of these commands
+are equivalent and will ping the Cleanup Crew:
 
 ```text
-@rustbot ping llvm
 @rustbot ping cleanup
+@rustbot ping bisect
+@rustbot ping reduce
 ```
 
 Keep in mind that these aliases are meant to make humans' life easier.