Python: One more change from code review

Author: yoff

docs/codeql/codeql-language-guides/analyzing-data-flow-in-python.rst

@@ -248,7 +248,7 @@ This query shows a data flow configuration that uses all network input as data s
 .. code-block:: ql
 
    import python
-   import semmle.code.csharp.dataflow.flowsources.PublicCallableParameter
+   import semmle.python.dataflow.new.RemoteFlowSources
 
    class MyDataFlowConfiguration extends DataFlow::Configuration {
      MyDataFlowConfiguration() {