[PATCH] cat-file: be consistent in usage string and documentation.

Now that we have something called tag object, and a notion of
"tags" stored in .git/refs/tags/ directory, the word "tagname"
has become misleading in the usage string.  The documentation
already calls that <type>.

Signed-off-by: Junio C Hamano <redacted>
---

 cat-file.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

61a4ebfb09cee6955f80a863b9651204ba17117a

diff --git a/cat-file.c b/cat-file.c
--- a/cat-file.c
+++ b/cat-file.c

@@ -13,7 +13,7 @@ int main(int argc, char **argv)
 	unsigned long size;
 
 	if (argc != 3 || get_sha1(argv[2], sha1))
-		usage("git-cat-file [-t | -s | tagname] <sha1>");
+		usage("git-cat-file [-t | -s | <type>] <sha1>");
 
 	if (!strcmp("-t", argv[1]) || !strcmp("-s", argv[1])) {
 		if (!sha1_object_info(sha1, type,