archive: clarify description of path parameter

Mention that path parameters are based on the current working directory.
Signed-off-by: NRene Scharfe <rene.scharfe@lsrfire.ath.cx>
--
 Documentation/git-archive.txt |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Documentation/git-archive.txt

@@ -74,8 +74,9 @@ OPTIONS
 	The tree or commit to produce an archive for.
 
 path::
-	If one or more paths are specified, include only these in the
-	archive, otherwise include all files and subdirectories.
+	Without an optional path parameter, all files and subdirectories
+	of the current working directory are included in the archive.
+	If one or more paths are specified, only these are included.
 
 BACKEND EXTRA OPTIONS
 ---------------------