[PATCH] MAINTAINERS: Fix parsing usbhid from scripts/get_maintainer.pl

[Mario Limonciello <mario.limonciello@amd.com>]

Recently trying to send a patch, I found that `./scripts/get_maintainer.pl`
didn't want to parse the usbhid section because of too long of a line
leading to a missing parenthesis.  To fix this, change () to [] so it can
parse even the long line.

```
(to-cmd) Adding to: linux-usb@vger.kernel.org (open list:USB HID/HIDBP DRIVERS (USB KEYBOARDS, MICE, REM...) from: 'scripts/get_maintainer.pl'
(to-cmd) Adding to: linux-input@vger.kernel.org (open list:HID CORE LAYER) from: 'scripts/get_maintainer.pl'
(to-cmd) Adding to: linux-kernel@vger.kernel.org (open list) from: 'scripts/get_maintainer.pl'
Unmatched () '(open list:USB HID/HIDBP DRIVERS (USB KEYBOARDS, MICE, REM...)' '' at /usr/lib/git-core/git-send-email line 546.
error: unable to extract a valid address from: linux-usb@vger.kernel.org (open list:USB HID/HIDBP DRIVERS (USB KEYBOARDS, MICE, REM...)
```

Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
---
 MAINTAINERS | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/MAINTAINERS b/MAINTAINERS
index 43d3d07afccd..f4658912c007 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -20537,7 +20537,7 @@ T:	git git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git
 F:	drivers/usb/gadget/
 F:	include/linux/usb/gadget*
 
-USB HID/HIDBP DRIVERS (USB KEYBOARDS, MICE, REMOTE CONTROLS, ...)
+USB HID/HIDBP DRIVERS [USB KEYBOARDS, MICE, REMOTE CONTROLS, ...]
 M:	Jiri Kosina <jikos@kernel.org>
 M:	Benjamin Tissoires <benjamin.tissoires@redhat.com>
 L:	linux-usb@vger.kernel.org
-- 
2.25.1