drm/atomic-helper: Fix kernel-doc

drivers/gpu/drm/drm_atomic_helper.c:802: warning: expecting prototype for drm_atomic_helper_check_wb_connector_state(). Prototype was for drm_atomic_helper_check_wb_encoder_state() instead.

Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=2216Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20220919103058.25561-1-jiapeng.chong@linux.alibaba.com

drivers/gpu/drm/drm_atomic_helper.c

@@ -786,7 +786,7 @@ drm_atomic_helper_check_modeset(struct drm_device *dev,
 EXPORT_SYMBOL(drm_atomic_helper_check_modeset);
 
 /**
- * drm_atomic_helper_check_wb_connector_state() - Check writeback encoder state
+ * drm_atomic_helper_check_wb_encoder_state() - Check writeback encoder state
  * @encoder: encoder state to check
  * @conn_state: connector state to check
  *