docs: update several URLs to point to docs.named-data.net

Change-Id: If000753573c6a50130dc3101a411b6d482ccf3ed
diff --git a/docs/release-notes/release-notes-0.7.1.rst b/docs/release-notes/release-notes-0.7.1.rst
index 50f3efb..9c12ad3 100644
--- a/docs/release-notes/release-notes-0.7.1.rst
+++ b/docs/release-notes/release-notes-0.7.1.rst
@@ -12,7 +12,7 @@
 New features
 ^^^^^^^^^^^^
 
-- `Signed Interests <https://named-data.net/doc/NDN-packet-spec/0.3/signed-interest.html>`__
+- `Signed Interests <https://docs.named-data.net/NDN-packet-spec/0.3/signed-interest.html>`__
   according to Packet Specification v0.3 (:issue:`4804`)
 
 - Add "in-order" mode to :ndn-cxx:`SegmentFetcher` and a corresponding signal that is emitted after