docs(tts): add Chinese version and fix some typos

docs/tutorial/en/index.rst

@@ -33,26 +33,41 @@ Welcome to AgentScope's documentation!
 
 .. toctree::
    :maxdepth: 1
-   :caption: Task Guides
+   :caption: Model and Context
 
    tutorial/task_model
    tutorial/task_prompt
-   tutorial/task_tool
+   tutorial/task_token
    tutorial/task_memory
    tutorial/task_long_term_memory
+
+.. toctree::
+   :maxdepth: 1
+   :caption: Tool
+
+   tutorial/task_tool
+   tutorial/task_mcp
+   tutorial/task_agent_skill
+
+.. toctree::
+   :maxdepth: 1
+   :caption: Agent
+
    tutorial/task_agent
+   tutorial/task_state
+   tutorial/task_hook
+
+.. toctree::
+   :maxdepth: 1
+   :caption: Features
+
    tutorial/task_pipeline
    tutorial/task_plan
    tutorial/task_rag
-   tutorial/task_state
-   tutorial/task_hook
-   tutorial/task_mcp
-   tutorial/task_agent_skill
    tutorial/task_studio
    tutorial/task_tracing
    tutorial/task_eval
    tutorial/task_embedding
-   tutorial/task_token
    tutorial/task_tts
 
 .. toctree::
@@ -77,3 +92,4 @@ Welcome to AgentScope's documentation!
    api/agentscope.tracing
    api/agentscope.session
    api/agentscope.exception
+   api/agentscope.tts