Replace the old example directory

tutorial/10_key_features/003_efficient_optimization_algorithms.py

@@ -96,7 +96,7 @@
 # :func:`~optuna.trial.Trial.should_prune` decides termination of the trial that does not meet a predefined condition.
 #
 # We would recommend using integration modules for major machine learning frameworks.
-# Exclusive list is :mod:`~optuna.integration` and usecases are available in `~optuna/examples <https://github.com/optuna/optuna-examples/>`_.
+# Exclusive list is :mod:`~optuna.integration` and usecases are available in `optuna-examples <https://github.com/optuna/optuna-examples/>`_.
 
 
 import logging