s/are may be/might be/
Also add a missing comma.
v2: Also s/its/it's/. Suggested by Nanley.
Reviewed-by: Nanley Chery <nanley.g.chery@intel.com>
Reviewed-by: Emma Anholt <emma@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9610>