small raises fix

Author: anakin87

integrations/mcp/src/haystack_integrations/tools/mcp/mcp_tool.py

@@ -1238,7 +1238,7 @@ def from_dict(cls, data: dict[str, Any]) -> "Tool":
 
         :param data: Dictionary containing serialized tool data
         :returns: A fully initialized MCPTool instance
-        :raises Exception if connection fails
+        :raises Exception: if connection fails
         """
         # Extract the tool parameters from the data dictionary
         inner_data = data["data"]