typo

Author: yyx990803

docs/workflow/testing-with-mocks.md

@@ -4,7 +4,7 @@
 
 In a real world application, our components most likely have external dependencies. When writing unit tests for components, it would be ideal if we can mock these external dependencies so that our tests only rely the behavior of the component being tested.
 
-`vue-loader` provides a feature that allows you to inject arbitrary dependencies to a `*.vue` component, using [inject-loader](https://github.com/plasticine/inject-loader). The general idea is that instead of directly importing the component module, we use `inject-loader` to create a "module factory" function for that module. When this function gets called with an object of mocks, it returns an instances of the module with the mocks injected.
+`vue-loader` provides a feature that allows you to inject arbitrary dependencies to a `*.vue` component, using [inject-loader](https://github.com/plasticine/inject-loader). The general idea is that instead of directly importing the component module, we use `inject-loader` to create a "module factory" function for that module. When this function gets called with an object of mocks, it returns an instance of the module with the mocks injected.
 
 Suppose we have a component like this: