[xdoctest][task 123] Reformat example code with google style in...

[xdoctest][task 123] Reformat example code with google style in python/paddle/quantization/quanters/abs_max.py (#56234)

python/paddle/quantization/quanters/abs_max.py

@@ -69,10 +69,10 @@ class FakeQuanterWithAbsMaxObserver(QuanterFactory):
     Examples:
         .. code-block:: python
 
-            from paddle.quantization import QuantConfig
-            from paddle.quantization.quanters import FakeQuanterWithAbsMaxObserver
-            quanter = FakeQuanterWithAbsMaxObserver(moving_rate=0.99)
-            q_config = QuantConfig(activation=quanter, weight=quanter)
+            >>> from paddle.quantization import QuantConfig
+            >>> from paddle.quantization.quanters import FakeQuanterWithAbsMaxObserver
+            >>> quanter = FakeQuanterWithAbsMaxObserver(moving_rate=0.99)
+            >>> q_config = QuantConfig(activation=quanter, weight=quanter)
     """
 
     def __init__(