polish: install instruction in example; import paths;

Signed-off-by: h-guo18 <[email protected]>

Author: h-guo18

examples/speculative_decoding/README.md

@@ -28,7 +28,7 @@ This example focuses on training with Hugging Face. To train with Megatron‑LM,
 Install Modelopt with `hf` dependencies and other requirements for this example:
 
 ```bash
-pip install nvidia-modelopt[hf]
+pip install -e ...
 pip install -r requirements.txt
 ```
 

modelopt/torch/export/unified_export_hf.py

@@ -27,10 +27,6 @@
 import torch
 import torch.nn as nn
 
-from modelopt.torch.export.plugins import (
-    rename_and_prune_if_spec_decoding,
-    set_config_if_spec_decoding,
-)
 from modelopt.torch.quantization import set_quantizer_by_cfg_context
 from modelopt.torch.quantization.nn import SequentialQuantizer, TensorQuantizer
 from modelopt.torch.quantization.qtensor import NVFP4QTensor
@@ -57,6 +53,7 @@
     QUANTIZATION_W4A8_AWQ,
     QUANTIZATION_W4A8_NVFP4_FP8,
 )
+from .plugins import rename_and_prune_if_spec_decoding, set_config_if_spec_decoding
 from .quant_utils import (
     fuse_prequant_layernorm,
     get_activation_scaling_factor,