fix(readme): update readme

Author: dineshpinto

README.md

@@ -143,7 +143,7 @@ Deploy on a [Confidential Space](https://cloud.google.com/confidential-computing
    source .env
    ```
 
-   > **Reminder:** Run the above command in every new shell session.
+   > **Reminder:** Run the above command in every new shell session. On Windows, we recommend using [git BASH](https://gitforwindows.org) to access commands like `source`.
 
 3. **Verify the Setup:**