docs: add doubleslashes reminder for Windows users

docs/docs/guides/04-using-models/03-import-models-using-absolute-filepath.mdx

@@ -70,6 +70,12 @@ Navigate to the `~/jan/models` folder. Create a folder named `<modelname>`, for
 }
 ```
 
+:::warning
+
+- Windows users may need to use double backslashes in the `url` property, for example: `C:\\Users\\username\\filename.gguf`.
+
+:::
+
 ### 3. Start the Model
 
 Restart Jan and navigate to the Hub. Locate your model and click the Use button.

docs/docs/guides/07-integrations/05-integrate-lmstudio.mdx

@@ -166,6 +166,13 @@ Navigate to the `~/jan/models` folder. Create a folder named `<modelname>`, for
 }
 ```
 
+:::warning
+
+- Windows users may need to use double backslashes in the `url` property, for example: `C:\\Users\\username\\filename.gguf`.
+
+:::
+
+
 ### 3. Start the Model
 
 Restart Jan and navigate to the Hub. Jan will automatically detect the model and display it in the Hub. Locate your model and click the Use button for trying out the migrating model.