I-nominated are nominated for discussion (rust-lang#1080)

* I-nominated are nominated for discussion

* Generalize meeting expression

Co-authored-by: Camelid <[email protected]>

Co-authored-by: Camelid <[email protected]>

Author: spastorino

src/contributing.md

@@ -471,9 +471,10 @@ appropriate labels to issues that haven't been triaged yet:
 
 * Red, **I**-prefixed labels indicate the **importance** of the issue. The
   [I-nominated][inom] label indicates that an issue has been nominated for
-  prioritizing at the next triage meeting. Similarly, the [I-prioritize][ipri]
-  indicates that an issue has been requested to be prioritized by the
-  appropriate team.
+  discussion at the next meeting of the team tagged using a
+  **T**-prefixed label. Similarly, the [I-prioritize][ipri] indicates
+  that an issue has been requested to be prioritized by the appropriate
+  team.
 
 * The purple **metabug** label marks lists of bugs collected by other
   categories.