documentation: trivial style cleanups

White-spaces, missing braces, standardize --[no-]foo.

Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/Documentation/git-archive.txt b/Documentation/git-archive.txt
index 250e522..b97aaab 100644
--- a/Documentation/git-archive.txt
+++ b/Documentation/git-archive.txt
@@ -10,7 +10,7 @@
 --------
 [verse]
 'git archive' [--format=<fmt>] [--list] [--prefix=<prefix>/] [<extra>]
-	      [-o | --output=<file>] [--worktree-attributes]
+	      [-o <file> | --output=<file>] [--worktree-attributes]
 	      [--remote=<repo> [--exec=<git-upload-archive>]] <tree-ish>
 	      [<path>...]