misc: Initial 22.06-rc0 commit

Type: docs
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>
Change-Id: I6b56d2cc785b505e77df0d24a1f441a4c09dc9a8
diff --git a/docs/aboutvpp/releasenotes/past.rst b/docs/aboutvpp/releasenotes/past.rst
index 2ead5ec..490698b 100644
--- a/docs/aboutvpp/releasenotes/past.rst
+++ b/docs/aboutvpp/releasenotes/past.rst
@@ -6,6 +6,7 @@
 .. toctree::
     :maxdepth: 1
 
+    v21.06
     v21.01
     v20.09
     v20.05.1