docs: update online installation instruction #none

Author: taprosoft

docs/images/change_space_params.png

@@ -5,11 +5,43 @@
 This page is intended for **end users** who want to use the `kotaemon` tool for Question
 Answering on local documents. If you are a **developer** who wants contribute to the project, please visit the [development](development/index.md) page.
 
-## Download
+## Installation (Online HuggingFace Space)
+
+<details>
+
+<summary>View instruction</summary>
+
+1. Go to [kotaemon_template](https://huggingface.co/spaces/cin-model/kotaemon_template)
+
+2. Use Duplicate function to create your own space
+
+![Duplicate space](https://raw.githubusercontent.com/Cinnamon/kotaemon/main/docs/images/duplicate_space.png)
+
+![Change space params](https://raw.githubusercontent.com/Cinnamon/kotaemon/main/docs/images/change_space_params.png)
+
+3. Wait for the build to complete and start up (apprx 10 mins).
+
+![Wait space build](https://raw.githubusercontent.com/Cinnamon/kotaemon/main/docs/images/space_build.png)
+
+![Close space build](https://raw.githubusercontent.com/Cinnamon/kotaemon/main/docs/images/close_logs_space.png)
+
+4. Follow the first setup instructions (and register for Cohere API key if needed)
+
+![Cohere API](https://raw.githubusercontent.com/Cinnamon/kotaemon/main/docs/images/cohere_api_key.png)
+
+5. Complete the setup and use your own private space!
+
+![App Startup](https://raw.githubusercontent.com/Cinnamon/kotaemon/main/docs/images/initial_startup.png)
+
+</details>
+
+## Installation (Offline)
+
+### Download
 
 Download the `kotaemon-app.zip` file from the [latest release](https://github.com/Cinnamon/kotaemon/releases/latest/).
 
-## Installation
+### Run setup script
 
 0. Unzip the downloaded file.
 1. Navigate to the `scripts` folder and start an installer that matches your OS: