[Docs] translate the mangermixin tutorial (#711)

* [Docs] translate the mangermixin tutorial

* Fix as comment

Co-authored-by: Qian Zhao <112053249+C1rN09@users.noreply.github.com>

* Minor refine

Co-authored-by: Zaida Zhou <58739961+zhouzaida@users.noreply.github.com>

* Remove blank block

* fix lint

Co-authored-by: Qian Zhao <112053249+C1rN09@users.noreply.github.com>
Co-authored-by: Zaida Zhou <58739961+zhouzaida@users.noreply.github.com>

docs/en/advanced_tutorials/manager_mixin.md

+# Global manager (ManagerMixin)
+
+During the training process, it is inevitable that we need to access some variables globally. Here are some examples:
+
+- Accessing the [logger](mmengine.logging.MMLogger) in model to print some initialization information
+- Accessing the [Visualizer](mmengine.config.Config) anywhere to visualize the predictions and feature maps.
+- Accessing the scope in [Registry](mmengine.registry.Registry) to get the current scope.
+
+In order to unify the mechanism to get the global variable built from different classes, MMEngine designs the [ManagerMixin](mmengine.utils.ManagerMixin).
+
+## Interface introduction
+
+- get_instance(name='', \*\*kwargs): Create or get the instance by name.
+- get_current_instance(): Get the currently built instance.
+- instance_name: Get the name of the instance.
+
+## How to use
+
+1. Define a class inherited from `ManagerMixin`
+
+```python
+from mmengine.utils import ManagerMixin
+
+
+class GlobalClass(ManagerMixin):
+    def __init__(self, name, value):
+        super().__init__(name)
+        self.value = value
+```
+
+```{note}
+Subclasses of `ManagerMixin` must accept `name` argument in `__init__`. The `name` argument is used to identify the instance, and you can get the instance by `get_instance(name)`.
+```
+
+2. Instantiate the instance anywhere. let's take the hook as an example:
+
+```python
+from mmengine import Hook
+
+class CustomHook(Hook):
+    def before_run(self, runner):
+        GlobalClass.get_instance('mmengine', value=50)
+        GlobalClass.get_instance(runner.experiment_name, value=100)
+```
+
+`GlobalClass.get_instance({name})` will first check whether the instance with the name `{name}` has been built. If not, it will build a new instance with the name `{name}`, otherwise it will return the existing instance. As the above example shows, when we call `GlobalClass.get_instance('mmengine')` at the first time, it will build a new instance with the name `mmengine`. Then we call `GlobalClass.get_instance(runner.experiment_name)`, it will also build a new instance with a different name.
+
+Here we build two instances for the convenience of the subsequent introduction of `get_current_instance`.
+
+3. Accessing the instance anywhere
+
+```python
+import torch.nn as nn
+
+
+class CustomModule(nn.Module):
+    def forward(self, x):
+        value = GlobalClass.get_current_instance().value
+        # Since the name of the latest built instance is
+        # `runner.experiment_name`, value will be 100.
+
+        value = GlobalClass.get_instance('mmengine').value
+        # The value of instance with the name mmengine is 50.
+
+        value = GlobalClass.get_instance('mmengine', 1000).value
+        # `mmengine` instance has been built, an error will be raised
+        # if `get_instance` accepts other parameters.
+```
+
+We can get the instance with the specified name by `get_instance(name)`, or get the currently built instance by `get_current_instance` anywhere.
+
+```{warning}
+If the instance with the specified name has already been built, `get_instance` will raise an error if it accepts its construct parameters.
+```

docs/en/advanced_tutorials/utils.md

-# utils
-
-Coming soon. Please refer to [chinese documentation](https://mmengine.readthedocs.io/zh_CN/latest/advanced_tutorials/utils.html).

docs/en/index.rst

@@ -45,7 +45,7 @@ You can switch between Chinese and English documents in the lower-left corner of
    advanced_tutorials/distributed.md
    advanced_tutorials/logging.md
    advanced_tutorials/fileio.md
-   advanced_tutorials/utils.md
+   advanced_tutorials/manager_mixin.md
    advanced_tutorials/cross_library.md
 
 .. toctree::

docs/zh_cn/advanced_tutorials/utils.md → docs/zh_cn/advanced_tutorials/manager_mixin.md

-# 辅助类
+# 全局管理器（ManagerMixin）
 
-## 全局管理器（ManagerMixin）
-
-Runner 在训练过程中，难免会使用全局变量来共享信息，例如我们会在 model 中获取全局的 [logger](mmengine.logging.MMLogger) 来打印初始化信息；在 model 中获取全局的 [Visualizer](./visualization.md) 来可视化预测结果、特征图；在 [Registry](../tutorials/registry.md) 中获取全局的 [DefaultScope](mmengine.registry.DefaultScope) 来确定注册域。为了管理这些功能相似的模块，MMEngine 实现了管理器（ManagerMix）来统一全局变量的创建和获取方式。
+Runner 在训练过程中，难免会使用全局变量来共享信息，例如我们会在 model 中获取全局的 [logger](mmengine.logging.MMLogger) 来打印初始化信息；在 model 中获取全局的 [Visualizer](./visualization.md) 来可视化预测结果、特征图；在 [Registry](../tutorials/registry.md) 中获取全局的 [DefaultScope](mmengine.registry.DefaultScope) 来确定注册域。为了管理这些功能相似的模块，MMEngine 设计了管理器 [ManagerMix](mmengine.utils.ManagerMixin) 来统一全局变量的创建和获取方式。
 
 ![ManagerMixin](https://user-images.githubusercontent.com/57566630/163429552-3c901fc3-9cc1-4b71-82b6-d051f452a538.png)
 
-### 接口介绍
+## 接口介绍
 
-- \_instance_name：被创建的全局实例名
 - get_instance(name='', \*\*kwargs)：创建或者返回对应名字的的实例。
 - get_current_instance()：返回最近被创建的实例。
-- instance_name:：获取对应实例的 name。
+- instance_name：获取对应实例的 name。
 
-### 使用方法
+## 使用方法
 
 1. 定义有全局访问需求的类
 

docs/zh_cn/index.rst

@@ -45,7 +45,7 @@
    advanced_tutorials/distributed.md
    advanced_tutorials/logging.md
    advanced_tutorials/fileio.md
-   advanced_tutorials/utils.md
+   advanced_tutorials/manager_mixin.md
    advanced_tutorials/cross_library.md
 
 .. toctree::