FIX feature matrix images

This reverts commit 2953dd4f0b86e2986e4242e0b9f354278eee1dc0.
diff --git a/docs/doc/images/cgrn.png b/doc/images/cgrn.png
similarity index 100%
rename from docs/doc/images/cgrn.png
rename to doc/images/cgrn.png
Binary files differ
diff --git a/docs/doc/images/cred.png b/doc/images/cred.png
similarity index 100%
rename from docs/doc/images/cred.png
rename to doc/images/cred.png
Binary files differ