docs: replace deprecated load_tools in google.mdx (#31214)

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docs/docs/integrations/providers/google.mdx

@@ -880,7 +880,7 @@ from langchain_community.tools import GoogleSearchRun, GoogleSearchResults
 
 Agent Loading:
 ```python
-from langchain.agents import load_tools
+from langchain_community.agent_toolkits.load_tools import load_tools
 tools = load_tools(["google-search"])
 ```
 
@@ -1313,7 +1313,7 @@ from langchain_community.tools import GoogleSearchRun, GoogleSearchResults
 
 Agent Loading:
 ```python
-from langchain.agents import load_tools
+from langchain_community.agent_toolkits.load_tools import load_tools
 tools = load_tools(["google-search"])
 ```