chore: update discord link (#539)

Author: thephez

docs/user/developers/testnet.rst

@@ -44,7 +44,7 @@ Tools and links
 
 The links below were collected from various community sources and may
 not necessarily be online or functioning at any given time. Please join
-`Dash Discord <http://staydashy.com/>`_ or the `Dash Forum
+`Dash Discord <http://chat.dash.org/>`_ or the `Dash Forum
 <https://www.dash.org/forum/>`_ if you have a question relating to a
 specific service.
 

docs/user/governance/eight-steps.rst

@@ -28,7 +28,7 @@ Run a pre-proposal discussion
   out if someone has proposed something similar in the past, and whether
   it succeeded or failed. There are `pre-proposal channels on the forum
   <https://www.dash.org/forum/topic/pre-budget-proposal-
-  discussions.93/>`__ and `Dash Discord <http://staydashy.com>`__,
+  discussions.93/>`__ and `Dash Discord <http://chat.dash.org/>`__,
   and `Reddit <https://www.reddit.com/r/dashpay>`__ also attracts a lot
   of views - consider the discussion on these channels to be the
   research phase of your proposal. Later, you can post a link to the