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

Change-Id: I4bab897f17e2b929675119198c9eab0309b6cc3e
diff --git a/docs/release-notes/release-notes-0.1.0.rst b/docs/release-notes/release-notes-0.1.0.rst
index a6fea30..bd76dfb 100644
--- a/docs/release-notes/release-notes-0.1.0.rst
+++ b/docs/release-notes/release-notes-0.1.0.rst
@@ -7,7 +7,7 @@
 
 - **Packet Format**
 
-  + `NDN-TLV <https://named-data.net/doc/NDN-packet-spec/0.1/>`__
+  + `NDN-TLV <https://docs.named-data.net/NDN-packet-spec/0.1/>`__
   + LocalControlHeader, to allow apps to set outgoing face and learn incoming face
 
 - **Faces**
diff --git a/docs/release-notes/release-notes-0.6.6.rst b/docs/release-notes/release-notes-0.6.6.rst
index 822a8d0..e01fe17 100644
--- a/docs/release-notes/release-notes-0.6.6.rst
+++ b/docs/release-notes/release-notes-0.6.6.rst
@@ -5,8 +5,8 @@
 
 .. note::
    This is the last release to support the `NDN packet format version 0.2.1
-   <https://named-data.net/doc/NDN-packet-spec/0.2.1/>`__. The next release will support
-   only the `v0.3 packet format <https://named-data.net/doc/NDN-packet-spec/0.3/>`__.
+   <https://docs.named-data.net/NDN-packet-spec/0.2.1/>`__. The next release will support
+   only the `v0.3 packet format <https://docs.named-data.net/NDN-packet-spec/0.3/>`__.
 
 New features
 ^^^^^^^^^^^^
diff --git a/docs/release-notes/release-notes-0.7.0.rst b/docs/release-notes/release-notes-0.7.0.rst
index e04ec09..38eaaf7 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 @@
 New features
 ^^^^^^^^^^^^
 
-- Support only `NDN packet format version 0.3 <https://named-data.net/doc/NDN-packet-spec/0.3/>`__
+- Support only `NDN packet format version 0.3 <https://docs.named-data.net/NDN-packet-spec/0.3/>`__
   (:issue:`4805`, :issue:`4581`, :issue:`4913`)
 
 - Initial support for ``PitToken`` (:issue:`4532`)