docs: remove the quickstart using bash script

docs/docs/new/install.md

@@ -5,6 +5,12 @@ description: How to install Nitro
 keywords: [Nitro, Jan, fast inference, inference server, local AI, large language model, OpenAI compatible, open source, llama]
 ---
 
+# Notices
+
+Nitro is an extremely simple program compiled into a single binary, you are encouraged to go directly to the releases page of Nitro and just download a binary and use. The below installation process is just for the purpose of being a "helper" script that does not guarantee working.
+
+You can find releases page of nitro at at [Release](https://github.com/janhq/nitro/releases).
+
 # Nitro Installation Guide
 
 This guide provides instructions for installing Nitro using the provided [install.sh](https://github.com/janhq/nitro/blob/main/install.sh) and [install.bat](https://github.com/janhq/nitro/blob/main/install.bat) scripts for Linux, macOS, and Windows systems.
@@ -181,4 +187,4 @@ Simple testcase with nitro, after starting the server, you can run the following
 
 ## Uninstallation
 - **Linux and macOS**: Run `sudo uninstall_nitro.sh` from anywhere (the script is added to PATH).
-- **Windows**: Open PowerShell and run `uninstallnitro.bat` from anywhere (the script is added to PATH).
+- **Windows**: Open PowerShell and run `uninstallnitro.bat` from anywhere (the script is added to PATH).

docs/docs/new/quickstart.md

@@ -11,23 +11,13 @@ Download and install Nitro on your system.
 
 ### From the release page
 
-> [Nitro Release Page](https://github.com/janhq/nitro/releases)
-
-### For Linux and MacOS
-
-  ```bash
-  curl -sfL https://raw.githubusercontent.com/janhq/nitro/main/install.sh | sudo /bin/bash -
-  ```
+You can directly choose the pre-built binary that compatible with your system at
 
-### For Windows
-
-  ```bash
-  powershell -Command "& { Invoke-WebRequest -Uri 'https://raw.githubusercontent.com/janhq/nitro/main/install.bat' -OutFile 'install.bat'; .\install.bat; Remove-Item -Path 'install.bat' }"
-  ```
+> [Nitro Release Page](https://github.com/janhq/nitro/releases)
 
-> Installing Nitro will add new files and configurations to your system to enable it to run.
+After you have downloaded the binary, you can directly use the binary with "./nitro".
 
-For a manual installation process, see: [Install from Source](install.md)
+If you want to build from source rather than using the pre-built binary, you can also check: [Build from Source](build-source.md)
 
 ## Step 2: Downloading a Model