Remove comma from pip install

docs/patterns/tools.mdx

@@ -139,7 +139,7 @@ LangChain has many [pre-built tools](https://python.langchain.com/v0.2/docs/inte
 First, install the dependencies:
 
 ```bash
-pip install -U langchain-community, duckduckgo-search
+pip install -U langchain-community duckduckgo-search
 ```
 
 Then import the tool for use:
@@ -251,4 +251,4 @@ Tools are particularly useful in scenarios where:
 
 By providing appropriate tools, you can significantly enhance the problem-solving capabilities of your AI agents and create more powerful and flexible workflows.
 
-While tools are powerful, they should be used judiciously. Provide only the tools that are necessary for the task at hand to avoid overwhelming the agent with too many options.
+While tools are powerful, they should be used judiciously. Provide only the tools that are necessary for the task at hand to avoid overwhelming the agent with too many options.