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

Change-Id: If000753573c6a50130dc3101a411b6d482ccf3ed
diff --git a/docs/release-notes/release-notes-0.7.0.rst b/docs/release-notes/release-notes-0.7.0.rst
index d726e66..4c228db 100644
--- a/docs/release-notes/release-notes-0.7.0.rst
+++ b/docs/release-notes/release-notes-0.7.0.rst
@@ -6,7 +6,7 @@
 **Breaking Change**
 
 This release features support of only `NDN packet format version 0.3
-<https://named-data.net/doc/NDN-packet-spec/0.3/>`__ (:issue:`4527`, :issue:`4567`,
+<https://docs.named-data.net/NDN-packet-spec/0.3/>`__ (:issue:`4527`, :issue:`4567`,
 :issue:`4709`, :issue:`4913`). The library encodes and interprets Interest and Data
 packets only in 0.3 format; support for version 0.2 has been completely removed. In
 addition, the URI representation of Interest packets has been updated to follow the