[amtk] docs: simplify

[Sébastien Wilmet <swilmet src gnome org>]

commit 5b60205f997aea4083480b1477db002b56094275
Author: Sébastien Wilmet <swilmet informatique-libre be>
Date:   Sun Apr 17 16:41:43 2022 +0200

    docs: simplify

 DEVELOPMENT.md               | 4 ----
 README.md                    | 2 ++
 amtk/NOTES => docs/dev-notes | 0
 3 files changed, 2 insertions(+), 4 deletions(-)
---
diff --git a/README.md b/README.md
index e0049f1..5c19250 100644
--- a/README.md
+++ b/README.md
@@ -21,6 +21,8 @@ Documentation
 See the `gtk_doc` Meson option. A convenient way to read the API documentation
 is with the [Devhelp](https://wiki.gnome.org/Apps/Devhelp) application.
 
+See also the `docs/` directory for additional notes.
+
 Development and maintenance
 ---------------------------
 
diff --git a/amtk/NOTES b/docs/dev-notes
similarity index 100%
rename from amtk/NOTES
rename to docs/dev-notes