Merge pull request #1339 from janhq/pena-patch

docs: Update command cortex -> cortex start

Author: freelerobot

README.md

@@ -84,9 +84,9 @@ To install Cortex.cpp, download the installer for your operating system from the
 ### CLI
 ```bash
 # 1. Start the Cortex.cpp server (The server is running at localhost:3928)
-cortex
+cortex start
 
-# 2. Start a model
+# 2. Start and chat with the model
 cortex run <model_id>:[engine_name]
 
 # 3. Stop a model