Moved the Upgrade Manuel out of FAQ (#3131)

### What problem does this PR solve?


### Type of change


- [x] Documentation Update

docs/guides/upgrade_ragflow.md

+---
+sidebar_position: 7
+slug: /upgrade_ragflow
+---
+
+# Upgrade RAGFlow
+
+You can upgrade RAGFlow to dev version or the latest version:
+
+- Dev versions are for developers and contributors. They are published on a nightly basis and may crash because they are not fully tested. We cannot guarantee their validity and you are at your own risk trying out latest, untested features.
+- The latest version refers to the most recent, officially published release. It is stable and works best with regular users.
+
+To upgrade RAGFlow to the dev version:
+
+Update the RAGFlow image and restart RAGFlow:
+
+1. Update **ragflow/docker/.env** as follows:
+
+   ```bash
+   RAGFLOW_IMAGE=infiniflow/ragflow:dev
+   ```
+
+2. Update RAGFlow image and restart RAGFlow:
+
+   ```bash
+   docker compose -f docker/docker-compose.yml pull
+   docker compose -f docker/docker-compose.yml up -d
+   ```
+
+To upgrade RAGFlow to the latest version:
+
+1. Update **ragflow/docker/.env** as follows:
+
+   ```bash
+   RAGFLOW_IMAGE=infiniflow/ragflow:latest
+   ```
+
+2. Update the RAGFlow image and restart RAGFlow:
+
+   ```bash
+   docker compose -f docker/docker-compose.yml pull
+   docker compose -f docker/docker-compose.yml up -d
+   ```

docs/quickstart.mdx

 
 4. Update **Model Setting**.
 
-5. RAGFlow also offers conversation APIs. Hover over your dialogue **>** **Chat Bot API** to integrate RAGFlow's chat capabilities into your applications:
-
-   ![chatbot api](https://github.com/infiniflow/ragflow/assets/93570324/fec23715-f9af-4ac2-81e5-942c5035c5e6)
-
-6. Now, let's start the show:
+5. Now, let's start the show:
 
    ![question1](https://github.com/infiniflow/ragflow/assets/93570324/bb72dd67-b35e-4b2a-87e9-4e4edbd6e677)
 
    ![question2](https://github.com/infiniflow/ragflow/assets/93570324/7cc585ae-88d0-4aa2-817d-0370b2ad7230)
 
+
+:::tip NOTE
+RAGFlow also offers HTTP and Python APIs for you to integrate RAGFlow's capabilities into your applications. Read the following documents for more information:
+
+- [Acquire a RAGFlow API key](./guides/develop/acquire_ragflow_api_key.md)
+- [HTTP API reference](./references/http_api_reference.md)
+- [Python API reference](./references/python_api_reference.md)
+:::

docs/references/http_api_reference.md

 
 # HTTP API Reference
 
-This document provides a complete reference for RAGFlow's RESTful API. Before proceeding, please ensure you [have your RAGFlow API key ready for authentication](../guides/develop/acquire_ragflow_api_key.md).
+A complete reference for RAGFlow's RESTful API. Before proceeding, please ensure you [have your RAGFlow API key ready for authentication](../guides/develop/acquire_ragflow_api_key.md).
 
 ---
 
   - `'Authorization: Bearer <YOUR_API_KEY>'`
 - Body:
   - `"content"`: `string`
-  - `"important_keywords"`: `string`
-  - `"available"`: `integer`
+  - `"important_keywords"`: `list[string]`
+  - `"available"`: `boolean`
 
 #### Request example
 

docs/references/python_api_reference.md

 
 # Python API Reference
 
-This document offers a complete reference for RAGFlow's Python APIs. Before proceeding, please ensure you [have your RAGFlow API key ready for authentication](../guides/develop/acquire_ragflow_api_key.md).
+A complete reference for RAGFlow's Python APIs. Before proceeding, please ensure you [have your RAGFlow API key ready for authentication](../guides/develop/acquire_ragflow_api_key.md).
 
 ---