Fix typo in release workflow. (comfyanonymous#10066)

Author: comfyanonymous

.github/workflows/stable-release.yml

@@ -71,7 +71,7 @@ jobs:
           ./python.exe get-pip.py
           ./python.exe -s -m pip install ../${{ inputs.cache_tag }}_python_deps/*
 
-          grep comfyui ../ComfyUI/requirements.txt ./requirements_comfyui.txt
+          grep comfyui ../ComfyUI/requirements.txt > ./requirements_comfyui.txt
           ./python.exe -s -m pip install -r requirements_comfyui.txt
           rm requirements_comfyui.txt