[API 2.0]Update 2.0 api from fluid to paddle (#27802)

python/paddle/fluid/executor.py

@@ -54,11 +54,11 @@ def global_scope():
     Examples:
         .. code-block:: python
 
-          import paddle.fluid as fluid
+          import paddle
           import numpy
 
-          fluid.global_scope().var("data").get_tensor().set(numpy.ones((2, 2)), fluid.CPUPlace())
-          numpy.array(fluid.global_scope().find_var("data").get_tensor())
+          paddle.static.global_scope().var("data").get_tensor().set(numpy.ones((2, 2)), paddle.CPUPlace())
+          numpy.array(paddle.static.global_scope().find_var("data").get_tensor())
     """
     return g_scope