wlr_{keyboard,pointer,touch}: Update event docs
Events used by our input devices were recently renamed from wlr_event_* to wlr_*_event, but the documentation and a single point of use was not updated accordingly.
Regressed by: !3484 (merged)
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Events used by our input devices were recently renamed from wlr_event_* to wlr_*_event, but the documentation and a single point of use was not updated accordingly.
Regressed by: !3484 (merged)