for-each-ref: call --start-after argument "marker"

dabecb9 (for-each-ref: introduce a '--start-after' option,
2025-07-15) added the option --start-after and referred to its argument
as "marker" in documentation and usage string, but not in the option's
short help.  Use "marker" there as well for consistency and brevity.

Signed-off-by: René Scharfe <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: rscharfe

builtin/for-each-ref.c

@@ -45,7 +45,7 @@ int cmd_for_each_ref(int argc,
 		OPT_GROUP(""),
 		OPT_INTEGER( 0 , "count", &format.array_opts.max_count, N_("show only <n> matched refs")),
 		OPT_STRING(  0 , "format", &format.format, N_("format"), N_("format to use for the output")),
-		OPT_STRING(  0 , "start-after", &filter.start_after, N_("start-after"), N_("start iteration after the provided marker")),
+		OPT_STRING(  0 , "start-after", &filter.start_after, N_("marker"), N_("start iteration after the provided marker")),
 		OPT__COLOR(&format.use_color, N_("respect format colors")),
 		OPT_REF_FILTER_EXCLUDE(&filter),
 		OPT_REF_SORT(&sorting_options),