[master] 82cebdabe doc: Polish

[Dridi Boukelmoune]

commit 82cebdabec9f1e11e07cdabe9ba06b5142da101c
Author: Dridi Boukelmoune <dridi.boukelmoune at gmail.com>
Date:   Mon Sep 14 10:36:12 2020 +0200

    doc: Polish

diff --git a/doc/changes.rst b/doc/changes.rst
index 315c84514..ffd2009cd 100644
--- a/doc/changes.rst
+++ b/doc/changes.rst
@@ -188,7 +188,7 @@ NEXT (scheduled 2020-09-15)
 
 * ``std.blobread()`` has been added
 
-* New ``main.beresp_uncacheable`` and ``main.beresp_shortlived``
+* New ``MAIN.beresp_uncacheable`` and ``MAIN.beresp_shortlived``
   counters have been added.
 
 * The ``I``, ``X`` and ``R`` arguments have been added to the VSC API