UPSTREAM: docs: usb: fix malformed table

The tables are separated with tabs and spaces mixed together, leading
to malformation. Changed the characters all into spaces to solve this
issue.

Signed-off-by: Hu Haowen <src.res@email.cn>
Link: https://lore.kernel.org/r/20210805040146.121526-1-src.res@email.cn


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Bug: 235196743
(cherry picked from commit 9c0edd56)
Change-Id: I3a7edcb21497cd143c2e7347c4dd796eec989218
Signed-off-by: Luiz Matheus <luizmmat@motorola.com>