Update Tools.md (#326)

* Update Tools.md

Fixing typo on the instantiation part

* Update Tools.md

Update tool naming

docs/core-concepts/Tools.md

@@ -44,15 +44,15 @@ os.environ["OPENAI_API_KEY"] = "Your Key"
 # Instantiate tools
 docs_tool = DirectoryReadTool(directory='./blog-posts')
 file_tool = FileReadTool()
-search_tool = SeperDevTool()
+search_tool = SerperDevTool()
 web_rag_tool = WebsiteSearchTool()
 
 # Create agents
 researcher = Agent(
     role='Market Research Analyst',
     goal='Provide up-to-date market analysis of the AI industry',
     backstory='An expert analyst with a keen eye for market trends.',
-    tools=[search_tool, website_rag],
+    tools=[search_tool, web_rag_tool],
     verbose=True
 )
 
@@ -228,4 +228,4 @@ agent = Agent(
 ```
 
 ## Conclusion
-Tools are pivotal in extending the capabilities of CrewAI agents, enabling them to undertake a broad spectrum of tasks and collaborate effectively. When building solutions with CrewAI, leverage both custom and existing tools to empower your agents and enhance the AI ecosystem.
+Tools are pivotal in extending the capabilities of CrewAI agents, enabling them to undertake a broad spectrum of tasks and collaborate effectively. When building solutions with CrewAI, leverage both custom and existing tools to empower your agents and enhance the AI ecosystem.