Fix indentation.

Doc/library/multiprocessing.rst

@@ -109,12 +109,12 @@ processes:
       def f(q):
           q.put([42, None, 'hello'])
 
-       if __name__ == '__main__':
-           q = Queue()
-           p = Process(target=f, args=(q,))
-           p.start()
-           print q.get()    # prints "[42, None, 'hello']"
-           p.join()
+      if __name__ == '__main__':
+          q = Queue()
+          p = Process(target=f, args=(q,))
+          p.start()
+          print q.get()    # prints "[42, None, 'hello']"
+          p.join()
 
    Queues are thread and process safe.