docs: fixed texts and links in node diagram

[TimS120]

Description

What I have done:

• Translated all Japanese texts
• Checked all links if they are broken and if the reference could be right (and fixed broken links of lateral_controller, longitudinal_controller and accel_map_calibrator)
• Checked, if all group-blocks are behind the single-blocks (costmap_generator wasn’t reachable (the link behind it, because the group where the node was in it was over it))
• Background color of car/traffic_light_classifier and pedestrian/traffic_light_classifier fixed

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[stale]

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