diff: tweak a _copy_ of diff_options with word-diff

diff --git a/RelNotes b/RelNotes
index e4bd68a0db00ed18db8199e92e8669919de53706..f9f04dd382737edd1e0caba5326e892017224a1d 120000 (symlink)
--- a/RelNotes
+++ b/RelNotes
@@ -1 +1 @@
-Documentation/RelNotes-1.5.6.4.txt
\ No newline at end of file
+Documentation/RelNotes/1.7.9.4.txt
\ No newline at end of file