link to how to file a proposal

Author: nikomatsakis

src/how_to/nominate.md

@@ -19,7 +19,7 @@ Where should we go from here?
 
 The ideal comment will identify precisely what question you would like answered. Please try to make the comment easy for us to parse and understand without requiring a lot of context. We encourage links to internals or Zulip so we can dive into the details, but it really helps us give useful answers if you can summarize the key details up front.
 
-If your comment requires more than 5-10 minutes of reading and discussion to understand and effectively respond to, consider filing a meeting proposal (TODO: link) instead. This will give you ~60 minutes to present your question and the lang team more time to analyze it. We may punt the question back to you with an ask to do so if the question isn't answerable in our triage meeting time.
+If your comment requires more than 5-10 minutes of reading and discussion to understand and effectively respond to, consider [filing a meeting proposal](./design_meeting.md) instead. This will give you ~60 minutes to present your question and the lang team more time to analyze it. We may punt the question back to you with an ask to do so if the question isn't answerable in our triage meeting time.
 
 ## How quickly will the lang team answer?