Fix docs issues found by /audit-docs

- VLLM_INTEGRATION.md: Add 3 missing config keys (avp_store_ttl,
  avp_target_model, avp_source_model) to configuration table
- BENCHMARKS.md: Remove unnecessary quotes from pip install command

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: SStas

docs/BENCHMARKS.md

@@ -128,7 +128,7 @@ All three modes are statistically identical (p=1.0 latent vs text). Earlier runs
 ## Reproduce
 
 ```bash
-pip install "avp[hf]" datasets
+pip install avp[hf] datasets
 
 python -m benchmarks.humaneval.run_humaneval \
     --model_name Qwen/Qwen2.5-7B-Instruct \

docs/VLLM_INTEGRATION.md

@@ -62,6 +62,9 @@ AVP_OVERRIDE_QWEN2=1 vllm serve Qwen/Qwen2.5-7B-Instruct \
 |-----|---------|-------------|
 | `avp_latent_steps` | `20` | Number of latent thinking steps during prefill. Set to `0` to disable. |
 | `avp_store_dir` | `/tmp/avp_kv_store` | Directory for file-based KV store. Also configurable via `AVP_KV_STORE_DIR` env var. |
+| `avp_store_ttl` | `300` | TTL in seconds for KV store entries. |
+| `avp_target_model` | *(none)* | Target model HF ID for cross-model rosetta projection. |
+| `avp_source_model` | *(none)* | Source model HF ID. Needed when the model is loaded from a local path (auto-detected from config otherwise). |
 
 ## How It Works