Fix Agent API (#5483)

* Fix agent.yml for new modules

* Fix ConversationalAgent docstrings

docs/pydoc/config/agent.yml

@@ -6,6 +6,8 @@ loaders:
 processors:
   - type: filter
     expression: "name not in ['print_text']"
+  - type: filter
+    expression:
     documented_only: true
     do_not_filter_modules: false
     skip_empty_modules: true

haystack/agents/conversational.py

@@ -17,14 +17,15 @@ class ConversationalAgent(Agent):
     If no tools are provided, the agent will be initialized to have a basic chat application.
 
     Here is an example how you can create a chat application with tools:
+
     ```python
     import os
 
     from haystack.agents.conversational import ConversationalAgent
     from haystack.nodes import PromptNode
-    from haystack.agents.base import ToolsManager, Tool
+    from haystack.agents.base import Tool
 
-    # Initialize a PromptNode and a ToolsManager with the desired tools
+    # Initialize a PromptNode and the desired tools
     prompt_node = PromptNode("gpt-3.5-turbo", api_key=os.environ.get("OPENAI_API_KEY"), max_length=256)
     tools = [Tool(name="ExampleTool", pipeline_or_node=example_tool_node)]
 
@@ -38,10 +39,11 @@ class ConversationalAgent(Agent):
             break
         else:
             assistant_response = agent.run(user_input)
-            print("\nAssistant:", assistant_response)
+            print("Assistant:", assistant_response)
     ```
 
     If you don't want to have any tools in your chat app, you can create a ConversationalAgent only with a PromptNode:
+
     ```python
     import os