[doc] fix: actor_rollout_ref.critic is not correct (#3778)

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They should start directly with `critic`

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Signed-off-by: Hollow Man <hollowman@opensuse.org>

docs/algo/ppo.md

@@ -33,7 +33,7 @@ Most critic configs are similar to those of actors. Note that the critic model i
 
 - `actor_rollout_ref.actor.ppo_mini_batch_size`: The set of sampled trajectories is split into multiple mini-batches with batch_size=ppo_mini_batch_size for PPO actor updates. The ppo_mini_batch_size is a global size across all workers
 
-- `actor_rollout_ref.critic.ppo_mini_batch_size`: The set of sampled trajectories is split into multiple mini-batches with batch_size=ppo_mini_batch_size for PPO critic updates. The ppo_mini_batch_size is a global size across all workers
+- `critic.ppo_mini_batch_size`: The set of sampled trajectories is split into multiple mini-batches with batch_size=ppo_mini_batch_size for PPO critic updates. The ppo_mini_batch_size is a global size across all workers
 
 - `actor_rollout_ref.actor.clip_ratio`: The PPO clip range. Default to 0.2
 

examples/ppo_trainer/README.md

@@ -31,7 +31,7 @@ Most critic configs are similar to those of actors. Note that the critic model i
 
 - `actor_rollout_ref.actor.ppo_mini_batch_size`: The set of sampled trajectories is split into multiple mini-batches with batch_size=ppo_mini_batch_size for PPO actor updates. The ppo_mini_batch_size is a global size across all workers
 
-- `actor_rollout_ref.critic.ppo_mini_batch_size`: The set of sampled trajectories is split into multiple mini-batches with batch_size=ppo_mini_batch_size for PPO critic updates. The ppo_mini_batch_size is a global size across all workers
+- `critic.ppo_mini_batch_size`: The set of sampled trajectories is split into multiple mini-batches with batch_size=ppo_mini_batch_size for PPO critic updates. The ppo_mini_batch_size is a global size across all workers
 
 - `actor_rollout_ref.actor.clip_ratio`: The PPO clip range. Default to 0.2
 

recipe/dapo/run_dapo_qwen3_moe_30b_megatron_npu.sh

@@ -107,7 +107,6 @@ ray job submit --no-wait --runtime-env="${RUNTIME_ENV}" \
     +actor_rollout_ref.model.override_config.embd_pdrop=0. \
     +actor_rollout_ref.model.override_config.resid_pdrop=0. \
     actor_rollout_ref.actor.optim.lr=1e-6 \
-    +actor_rollout_ref.critic.optim.lr=5e-8 \
     actor_rollout_ref.actor.optim.lr_warmup_steps=10 \
     actor_rollout_ref.actor.ppo_mini_batch_size=${train_prompt_mini_bsz} \
     actor_rollout_ref.actor.megatron.param_offload=${offload} \