docs: fix typo in testing guidelines

Author: romain-trotard

docs/app/routes/docs/guides/testing.mdx

@@ -127,7 +127,7 @@ correctly made.
 ## Skipping Animations
 
 The solution to this problem is to skip animations when testing. This can be done by using the `Globals` object and calling the `assign`
-method setting `skipAnimations` to `true`. You can does this immediately in the `setup` file for your tests or if you want more granual
+method setting `skipAnimations` to `true`. You can do this immediately in the `setup` file for your tests or if you want more granual
 control then you could use the `beforeAll | beforeEach` hooks to set it.
 
 ```tsx lines=2,5-10