git-send-email: handle email address with quoted comma

diff --git a/RelNotes b/RelNotes
index e29d6504d9e8fe45d3f7ff7f82f1e8f1f57b9f6f..ebf508f2d7ccb5b3c32dd298dfbfcd243a006947 120000 (symlink)
--- a/RelNotes
+++ b/RelNotes
@@ -1 +1 @@
-Documentation/RelNotes-1.5.6.txt
\ No newline at end of file
+Documentation/RelNotes-1.6.0.5.txt
\ No newline at end of file