help: make help_unknown_ref() NORETURN

diff --git a/Documentation/git-mktag.txt b/Documentation/git-mktag.txt
index 3ca158b05e2792de404c9f0622bf4eb41af6b5e9..fa6a7561236f70808994cf63c37b400b6e337318 100644 (file)
--- a/Documentation/git-mktag.txt
+++ b/Documentation/git-mktag.txt
@@ -9,7 +9,7 @@ git-mktag - Creates a tag object
 SYNOPSIS
 --------
 [verse]
-'git mktag' < signature_file
+'git mktag'
 
 DESCRIPTION
 -----------
@@ -20,7 +20,8 @@ The output is the new tag's <object> identifier.
 
 Tag Format
 ----------
-A tag signature file has a very simple fixed format: four lines of
+A tag signature file, to be fed to this command's standard input,
+has a very simple fixed format: four lines of
 
   object <sha1>
   type <typename>