Documentation: Move diff.<driver>.* from config.txt to diff-config.txt

diff --git a/RelNotes b/RelNotes
index 5217e8e5543a696660e3f275d9717e0656d786f8..211e93c764610c3d2c779ffb7216574328f878fb 120000 (symlink)
--- a/RelNotes
+++ b/RelNotes
@@ -1 +1 @@
-Documentation/RelNotes-1.7.2.3.txt
\ No newline at end of file
+Documentation/RelNotes/1.7.4.4.txt
\ No newline at end of file