Update model location FAQ for desktop version (#570)

Author: mintlify[bot]

development/core-concepts/models.mdx

@@ -63,6 +63,9 @@ ComfyUI does not currently support uninstalling models through the frontend inte
   <Accordion title="Why can't I find my model?">
     If you've installed a model but can't find it in ComfyUI, try these steps:
 
+    - Verify the model is in the correct location:
+      - For **ComfyUI Desktop**: Go to **Help** menu → **Open Folder** → **Open Model Folder** to check the model installation path
+      - Ensure your model file is placed in the correct subfolder (e.g., `checkpoints`, `loras`, `vae`)
     - Press the `r` key to refresh node definitions so ComfyUI can detect the model
     - Restart ComfyUI
     - Ensure the correct model is selected in the model loader node

zh-CN/development/core-concepts/models.mdx

@@ -63,6 +63,9 @@ ComfyUI目前不支持通过前端界面卸载模型。如果您想要移除或
   <Accordion title="为什么找不到我的模型?">
     如果您已经安装了模型但在 ComfyUI 中找不到,请尝试以下步骤:
 
+    - 验证模型是否在正确的位置:
+      - 对于 **ComfyUI Desktop 桌面版**: 前往**帮助**菜单 → **打开文件夹** → **打开模型文件夹**来检查模型安装路径
+      - 确保您的模型文件放置在正确的子文件夹中(例如 `checkpoints`、`loras`、`vae`)
     - 安装模型后点击快捷键 `r` 来刷新节点定义,以便 ComfyUI 可以检测到
     - 重启 ComfyUI
     - 确保在模型加载节点对应的模型有被选中