translation main-class files to chinese (#27588)

* translate work

* update

* update

* update [[autodoc]]

* Update callback.md

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Co-authored-by: jiaqiw <wangjiaqi50@huawei.com>

docs/source/zh/main_classes/keras_callbacks.md

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+⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
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+
+# Keras callbacks
+
+在Keras中训练Transformers模型时，有一些库特定的callbacks函数可用于自动执行常见任务：
+
+## KerasMetricCallback
+
+[[autodoc]] KerasMetricCallback
+
+## PushToHubCallback
+
+[[autodoc]] PushToHubCallback