[Buildroot] [PATCH 1/1] package/libqmi: fix build with help2man

[Christian Stewart]

Hi all,

Original e-mail:
> Fix the following build failure raised with help2man since bump to
> version 1.30.0 in commit 50c5495f81d3418a0f63fc642dc6beb41cd316e0:

Please cherry-pick to 2021.11.x. Thanks.

Best regards,
Christian