UPSTREAM: ABI: configfs-usb-gadget-uac2: fix a broken table

Changeset af6cbe09920 ("usb: gadget: f_uac2: add volume and mute support")
added some new elements to the table but didn't care enough to actually
adjust the columns, causing the output to be broken as warned by
Sphinx when producing the documentation.

Readjust it for it to be a valid ReST table.

Fixes: eaf6cbe0 ("usb: gadget: f_uac2: add volume and mute support")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/d253819a4c201b942d754682bb91dd278300fb79.1632740376.git.mchehab+huawei@kernel.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bug: 235196743
(cherry picked from commit 5ef80353)
Change-Id: I84fedd31e7534f884a5dafdbd3bfbf612e4161f3
Signed-off-by: Luiz Matheus <luizmmat@motorola.com>