您好，请问支持多分类问题吗？应该如何修改，是否有详细的教程。万分感激。

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Describe the question(问题描述) 我只修改了代码中的了logit = tf.keras.layers.Dense(1, use_bias=False, activation=None)(tower_output)神经元个数，但报错。 A clear and concise description of what the question is.

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Operating environment(运行环境):

• python version [e.g. 3.6]
• tensorflow version [e.g. 1.4.0, 1.15.0, 2.5.0]
• deepctr version [e.g. 0.9.0,]