Update dnsseed-policy.md (#2751)

* Remove irrelevant link in dnsseed-policy

* Link to dash-seeder in dnsseed-policy

instead of bitcoin-seeder

doc/dnsseed-policy.md

@@ -43,12 +43,11 @@ related to the DNS seed operation.
 
 If these expectations cannot be satisfied the operator should
 discontinue providing services and contact the active Dash
-Core development team as well as posting on
-[bitcoin-dev](https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev).
+Core development team.
 
 Behavior outside of these expectations may be reasonable in some
 situations but should be discussed in public in advance.
 
 See also
 ----------
-- [bitcoin-seeder](https://github.com/sipa/bitcoin-seeder) is a reference implementation of a DNS seed.
+- [dash-seeder](https://github.com/nightlydash/dash-seeder) is a reference implementation of a DNS seed.