[PATCH] git-submodule.txt: fix AsciiDoc formatting error

[Denton Liu <liu.denton@gmail.com>]

In b57e8119e6 (submodule: teach set-branch subcommand, 2019-02-08), the
`set-branch` subcommand was added for submodules. When the documentation
was written, the syntax for a "index term" in AsciiDoc was
accidentally used. This caused the documentation to be rendered as

	set-branch -d|--default)|(-b|--branch <branch> [--] <path>

instead of

	set-branch (-d|--default)|(-b|--branch <branch>) [--] <path>

Remove surrounding parentheses so that the "index term" syntax is not
triggered (and because it looks nicer without them anyway ;) ).

Signed-off-by: Denton Liu <liu.denton@gmail.com>
---
 Documentation/git-submodule.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/git-submodule.txt b/Documentation/git-submodule.txt
index 0ed5c24dc1..e349442f4c 100644
--- a/Documentation/git-submodule.txt
+++ b/Documentation/git-submodule.txt
@@ -173,7 +173,7 @@ submodule with the `--init` option.
 If `--recursive` is specified, this command will recurse into the
 registered submodules, and update any nested submodules within.
 --
-set-branch ((-d|--default)|(-b|--branch <branch>)) [--] <path>::
+set-branch (-d|--default)|(-b|--branch <branch>) [--] <path>::
 	Sets the default remote tracking branch for the submodule. The
 	`--branch` option allows the remote branch to be specified. The
 	`--default` option removes the submodule.<name>.branch configuration
-- 
2.23.0.163.g796a25ee1e