add --wildcards to tar options in README

[GitHub pull_request - opened]

alsa-project/alsa-ucm-conf pull request #232 was opened from nodens:

Without it, at least on some recent tar version, it won't work: --wildcards is the default only for exclusions, not for member selection. This tends to confuse users, even though it's just an example (e.g #220)

Request URL   : https://github.com/alsa-project/alsa-ucm-conf/pull/232
Patch URL     : https://github.com/alsa-project/alsa-ucm-conf/pull/232.patch
Repository URL: https://github.com/alsa-project/alsa-ucm-conf