fix link in README

Signed-off-by: Muhammad Zulfaqar Azmi <[email protected]>

planning/behavior_path_lane_change_module/README.md

@@ -155,15 +155,15 @@ stop
 
 #### Candidate Path's Safety check
 
-See [safety check utils explanation](../docs/behavior_path_planner_safety_check.md)
+See [safety check utils explanation](../behavior_path_planner/docs/behavior_path_planner_safety_check.md)
 
 #### Objects selection and classification
 
 First, we divide the target objects into obstacles in the target lane, obstacles in the current lane, and obstacles in other lanes. Target lane indicates the lane that the ego vehicle is going to reach after the lane change and current lane mean the current lane where the ego vehicle is following before the lane change. Other lanes are lanes that do not belong to the target and current lanes. The following picture describes objects on each lane. Note that users can remove objects either on current and other lanes from safety check by changing the flag, which are `check_objects_on_current_lanes` and `check_objects_on_other_lanes`.
 
 ![object lanes](./images/lane_objects.drawio.svg)
 
-Furthermore, to change lanes behind a vehicle waiting at a traffic light, we skip the safety check for the stopping vehicles near the traffic light.　The explanation for parked car detection is written in [documentation for avoidance module](../docs/behavior_path_planner_avoidance_design.md).
+Furthermore, to change lanes behind a vehicle waiting at a traffic light, we skip the safety check for the stopping vehicles near the traffic light.　The explanation for parked car detection is written in [documentation for avoidance module](../behavior_path_planner/docs/behavior_path_planner_avoidance_design.md).
 
 ##### Collision check in prepare phase