Describe how the tags should be used. The guidelines for the "Fixes" tag are taken from the Linux kernel documentation [1][2]. [1] https://www.kernel.org/doc/html/v4.17/process/submitting-patches.html#using-reported-by-tested-by-reviewed-by-suggested-by-and-fixes [2] https://www.kernel.org/doc/html/v4.17/process/submitting-patches.html#describe-changes Closes: #974 Signed-off-by: José Expósito <jose.exposito89@gmail.com> Part-of: <https://gitlab.freedesktop.org/libinput/libinput/-/merge_requests/978>