fix: correct test assertion for search error formatting

Update test to match actual error message format in search tool.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>
Signed-off-by: phernandez <paul@basicmachines.co>

Author: phernandez

tests/mcp/test_tool_search.py

@@ -253,7 +253,7 @@ def test_format_search_error_generic(self):
 
         assert "# Search Failed" in result
         assert "Error searching for 'test query': unknown error" in result
-        assert "General troubleshooting" in result
+        assert "## Troubleshooting steps:" in result
 
 
 class TestSearchToolErrorHandling: