docs: change first sentence in docs for stateful arg of numpy function
diff --git a/tensorflow/python/ops/script_ops.py b/tensorflow/python/ops/script_ops.py
index 4e71ccdf..ac62a98 100644
--- a/tensorflow/python/ops/script_ops.py
+++ b/tensorflow/python/ops/script_ops.py
@@ -700,9 +700,8 @@
     inp: A list of `tf.Tensor` objects.
     Tout: A list or tuple of tensorflow data types or a single tensorflow data
       type if there is only one, indicating what `func` returns.
-    stateful: (Boolean.) If False, guarantee the runtime that
-      the function is stateless and the runtime is free to make
-      optimizations based on this, otherwise it is considered to be stateful.
+    stateful: (Boolean.) Setting this argument to False tells the runtime to
+      treat the function as stateless, which enables certain optimizations.
       A function is stateless when given the same input it will return the
       same output and have no side effects; its only purpose is to have a
       return value.