Documentation/rev-list-options: wrap --date=<format> block with "--"

diff --git a/RelNotes b/RelNotes
index c2dd9dd6ad6b85f458e8a7372b5eac9a1fc68a25..0b6d9fdbcf0cc440914446e494fde666c893562f 120000 (symlink)
--- a/RelNotes
+++ b/RelNotes
@@ -1 +1 @@
-Documentation/RelNotes/2.13.6.txt
\ No newline at end of file
+Documentation/RelNotes/2.22.0.txt
\ No newline at end of file