Update the codeowners

Signed-off-by: Jingyu Xin <[email protected]>

Author: jingyu-ml

.github/CODEOWNERS

@@ -22,6 +22,7 @@ modelopt/torch/distill @NVIDIA/modelopt-torch-distill-codeowners
 modelopt/torch/export @NVIDIA/modelopt-torch-export-codeowners
 modelopt/torch/nas @NVIDIA/modelopt-torch-nas-prune-codeowners
 modelopt/torch/opt @NVIDIA/modelopt-torch-opt-codeowners
+modelopt/torch/peft @NVIDIA/modelopt-torch-peft-codeowners
 modelopt/torch/prune @NVIDIA/modelopt-torch-nas-prune-codeowners
 modelopt/torch/quantization @NVIDIA/modelopt-torch-quantization-codeowners
 modelopt/torch/sparsity @NVIDIA/modelopt-torch-sparsity-codeowners