[AutoRound] Support WAN2.2 W4A16 quantization model (#3353)

Signed-off-by: lvliang-intel <liang1.lv@intel.com>
Signed-off-by: hyh_hh <huyinghong1@huawei.com>
Co-authored-by: hxhhhlalala <hyh_hh@163.com>
Co-authored-by: hyh_hh <huyinghong1@huawei.com>

docs/user_guide/quantization/mxfp4.md

@@ -397,7 +397,7 @@ names** discovered in Step 1. No code changes to the model are required.
 ```python
 omni = Omni(
     model="/path/to/your-model",
-    quantization_config={
+    quantization={
         "method": "mxfp4_dualscale",
         "ignored_layers": [
             "blocks.0.attn1.to_qkv",   # runtime name, not diffusers name