docs(reactive): correct typos (#3532)

packages/reactive/docs/guide/concept.md

@@ -19,7 +19,7 @@ We mainly use the following APIs to create observable objects in @formily/reacti
 
 ## Reaction
 
-In the reactive programming model, reaction is equivalent to the subscriber of the subscribeable object. It receives a tracker function. When this function is executed, if there is a **read operation* on an attribute in the observable object inside the function. * (Dependency collection), then the current reaction will be bound to the attribute (dependency tracking), knowing that the attribute has a **write operation\*\* in other places, it will trigger the tracker function to repeat execution, using a picture Means:
+In the reactive programming model, reaction is equivalent to the subscriber of the subscribeable object. It receives a tracker function. When this function is executed, if there is a **read operation* on an attribute in the observable object inside the function. * (Dependency collection), then the current reaction will be bound to the attribute (dependency tracking), until the attribute has a **write operation\*\* in other places, it will trigger the tracker function to repeat execution, using a picture Means:
 
 ![](https://img.alicdn.com/imgextra/i4/O1CN01DQMGUL22mFICDsKfY_!!6000000007162-2-tps-1234-614.png)
 

packages/reactive/docs/guide/concept.zh-CN.md

@@ -19,7 +19,7 @@ observable 是响应式编程模型中最重要的一块，它的核心概念就
 
 ## Reaction
 
-reaction 在响应式编程模型中，它就相当于是可订阅对象的订阅者，它接收一个 tracker 函数，这个函数在执行的时候，如果函数内部有对 observable 对象中的某个属性进行**读操作**(依赖收集)，那当前 reaction 就会与该属性进行一个绑定(依赖追踪)，知道该属性在其他地方发生了**写操作**，就会触发 tracker 函数重复执行，用一张图表示：
+reaction 在响应式编程模型中，它就相当于是可订阅对象的订阅者，它接收一个 tracker 函数，这个函数在执行的时候，如果函数内部有对 observable 对象中的某个属性进行**读操作**(依赖收集)，那当前 reaction 就会与该属性进行一个绑定(依赖追踪)，直到该属性在其他地方发生了**写操作**，就会触发 tracker 函数重复执行，用一张图表示：
 
 ![](https://img.alicdn.com/imgextra/i4/O1CN01DQMGUL22mFICDsKfY_!!6000000007162-2-tps-1234-614.png)