re-order the doc

Author: alabulei1

docs/ai-models/embeddings/_category_.json

@@ -1,6 +1,6 @@
 {
   "label": "Embeddings",
-  "position": 1,
+  "position": 3,
   "link": {
     "type": "generated-index"
   }

docs/ai-models/llm/_category_.json

@@ -1,6 +1,6 @@
 {
   "label": "LLM",
-  "position": 1,
+  "position": 2,
   "link": {
     "type": "generated-index"
   }

docs/llama-nexus/mcp/add-mcp-server.md

@@ -0,0 +1,40 @@
+---
+sidebar_position: 3
+---
+
+# Connect Another MCP Server
+
+As an MCP client, **Llama-Nexus** supports connecting to multiple MCP servers. This article provides an example of how to add an additional MCP server.
+
+## Modify `config.toml`
+
+Assuming you have already [installed Llama-Nexus](../quick-start.md#install-the-llama-nexus-software) on your machine, you can add a new MCP server by editing the `config.toml` file:
+
+```bash
+vi config.toml
+```
+
+Add a new MCP server entry using the following format:
+
+```
+[[mcp.server.tool]]
+name      = "test-search"
+transport = "stream-http"
+url       = "http://YOUR_IP_ADDRESS/mcp"
+enable    = true
+```
+
+> Make sure enable = true to activate the MCP service.
+
+Next, [start the Llama-Nexus service and register an LLM that supports function calls with the MCP server.](../mcp/quick-start-with-mcp.md).
+
+Once registered successfully, you can send requests using the OpenAI-compatible API. For example:
+
+```
+curl -X POST http://localhost:3389/v1/chat/completions \
+  -H 'accept: application/json' \
+  -H 'Content-Type: application/json' \
+  -d '{"messages":[{"role":"system", "content": "You are a helpful assisstant.If the user asks a question, you will use the  tool call to answer user question."},{"role":"user", "content": "Send an email to [email protected] and told her the dinner is cancelled, becuase I have a business meeting."}]}'
+```
+
+If everything goes well, the email will be sent automactailly

docs/llama-nexus/mcp/quick-start-with-mcp.md

@@ -1,5 +1,5 @@
 ---
-sidebar_position: 4
+sidebar_position: 1
 ---
 
 # Quick start with MCP servers