docs: clarify

Author: sheremet-va

docs/guide/migration.md

@@ -87,7 +87,7 @@ See also new guides:
 
 ### `spyOn` Supports Constructors
 
-Previously, if you tried to spy on a constructor with `vi.spyOn`, you would get an error like `Constructor <name> requires 'new'`. Since Vitest 4, all mocks called with a `new` keyword construct the instance instead of callying `mock.apply`. This means that the mock implementation has to use either the `function` or the `class` keyword:
+Previously, if you tried to spy on a constructor with `vi.spyOn`, you would get an error like `Constructor <name> requires 'new'`. Since Vitest 4, all mocks called with a `new` keyword construct the instance instead of callying `mock.apply`. This means that the mock implementation has to use either the `function` or the `class` keyword in these cases:
 
 ```ts {12-14,16-20}
 const cart = {