documentation: git-update-index: add --show-index-version to synopsis
In 606e088d5d (update-index: add --show-index-version, 2023-09-12), we
added the new '--show-index-version' option to 'git-update-index' and
documented it, but forgot to add it to the synopsis section.
Add '--show-index-version' to the synopsis of 'git-update-index'.
Signed-off-by: Dov Murik <dov.murik@linux.dev>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/Documentation/git-update-index.txt b/Documentation/git-update-index.txt
index 8c47890..7128aed 100644
--- a/Documentation/git-update-index.txt
+++ b/Documentation/git-update-index.txt
@@ -25,6 +25,7 @@
[--really-refresh] [--unresolve] [--again | -g]
[--info-only] [--index-info]
[-z] [--stdin] [--index-version <n>]
+ [--show-index-version]
[--verbose]
[--] [<file>...]
