refactor: rename variable and improve manager agent initialization

Author: Dwij1704

examples/smolagents/multi_smolagents_system.py

@@ -96,10 +96,8 @@ def visit_webpage(url: str) -> str:
     tools=[DuckDuckGoSearchTool(), visit_webpage],
     model=model,
 )
-abc = "Manager Agent"
+
 manager_agent = CodeAgent(
-    name=abc,
-    description="This agent manages the web search agent and coordinates its tasks.",
     tools=[],
     model=model,
     managed_agents=[web_agent],