contributor docs: Refer to How we communicate in Design discussions.

docs/contributing/design-discussions.md

@@ -23,24 +23,9 @@ on supporting the productivity of the design team. The more we are able to
 incorporate a variety of ideas, experiences, and perspectives into the
 discussion, the better decisions we'll be able to make.
 
-The following guidelines should put you on the right track:
-
-- Always treat other participants in the discussion with respect, regardless of
-  whether you agree with their ideas. Ad hominem attacks are never appropriate.
-
-- Aim to present your feedback precisely, with reasoning, and in as objective a
-  fashion as you can manage. E.g., “This button really jumps out at me in a way
-  that’s distracting; maybe it’s because of the color has a higher contrast than
-  the surrounding components?” is better than, “Can we make that color less
-  dark?”.
-
-- Clarify your feedback if there are follow-up questions or points of confusion.
-  However, avoid simply repeating the same points, as it does not move us closer
-  to making the best decisions we can.
-
-- When relevant, highlight information you have beyond your personal opinion.
-  E.g., “I moderate a community, and often have to answer questions about how
-  this works,” is more helpful than, “This is confusing.”
+Please start be reviewing the guide to [how we
+communicate](how-we-communicate.md) in the Zulip community. Also, when sharing
+your ideas:
 
 - Think about corner cases and interactions with existing features that the
   design will need to handle, and bring up problems with them, especially if they
@@ -54,17 +39,6 @@ The following guidelines should put you on the right track:
   incompatible with Zulip's security model,” is important to present
   early.
 
-- If you disagree with someone on the design team, the best way to make progress
-  is usually to state your opinions and reasoning clearly and respectfully, and
-  then let the other design team members catch up on the conversation. Other
-  project members may find your argument persuasive, and may have ideas that
-  address your concerns.
-
-Finally, don’t forget to express support and appreciation for ideas and work
-that you like, whether in messages or emoji reactions! It helps motivate folks
-working on Zulip’s design, builds consensus towards decisions, and creates a more
-positive atmosphere in the community.
-
 Note that [#design][design stream] is a high-traffic stream, and thoughtful
 participation takes time. Don’t let it prevent you from doing your own work. It
 can be helpful to pick particular conversations to follow, where you feel that