manuals: add 3.4 and 3.4.1 release notes after migration information

Only done for release 3.4 and 3.4.1 so far.
Release notes are kept under the migration-guides/ directory for
the moment, for easier reviewing.

(From yocto-docs rev: b311070d866cf4ab51c72ff3ac7bc41ea3e932cb)

Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

documentation/conf.py

@@ -72,6 +72,7 @@ rst_prolog = """
 
 # external links and substitutions
 extlinks = {
+    'cve': ('https://nvd.nist.gov/vuln/detail/CVE-%s', 'CVE-%s'),
     'yocto_home': ('https://www.yoctoproject.org%s', None),
     'yocto_wiki': ('https://wiki.yoctoproject.org/wiki%s', None),
     'yocto_dl': ('https://downloads.yoctoproject.org%s', None),

documentation/index.rst

@@ -38,10 +38,10 @@ Welcome to the Yocto Project Documentation
 
 .. toctree::
    :maxdepth: 1
-   :caption: Releases manual
+   :caption: Release Manuals
    :hidden:
 
-   Release Migration Guides <migration-guides/index>
+   Release Information <migration-guides/index>
    releases
 
 .. toctree::

documentation/migration-guides/index.rst

@@ -1,12 +1,12 @@
 .. SPDX-License-Identifier: CC-BY-SA-2.0-UK
 
-==========================
- Release Migration Guides
-==========================
+====================
+ Release Information
+====================
 
 |
 
-Each document in this chapter provides information about how
+Each document in this chapter provides release notes and information about how
 to move to one release of the Yocto Project from the previous one.
 
 .. toctree::