drm/bridge: Fix kernel-doc typo in desc of output_bus_cfg in drm_bridge_state

There's an obvious copy-paste error in the description of
output_bus_cfg. Fix it.

Fixes: f32df58a ("drm/bridge: Add the necessary bits to support bus format negotiation")
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230817094808.1.I41b04c3a8305c9f1c17af886c327941c5136ca3b@changeid

include/drm/drm_atomic.h

@@ -1126,7 +1126,7 @@ struct drm_bridge_state {
 	struct drm_bus_cfg input_bus_cfg;
 
 	/**
-	 * @output_bus_cfg: input bus configuration
+	 * @output_bus_cfg: output bus configuration
 	 */
 	struct drm_bus_cfg output_bus_cfg;
 };