This commit fixes 3 more broken path links in the
`examples/4_train_policy_with_script.md` file
by changing the relative path prefix from
`../../` to `../`:
1. (line 53)`../../lerobot/common/policies/diffusion`
→ `../lerobot/common/policies/diffusion`
2. (line 66)`../../lerobot/common/policies/act`
→ `../lerobot/common/policies/act`
3. (line 77)`../../lerobot/common/envs/configs.py`
→ `../lerobot/common/envs/configs.py`
4ef056ae12