📝 Typo fix in model-based-testing.md (#5369)

This is just a small typo fix in one of the documentation pages.

Thanks for maintaining this library!

website/docs/advanced/model-based-testing.md

@@ -8,7 +8,7 @@ Turn fast-check into a crazy QA
 
 ## Overview
 
-Model-based testing can also be referred to as[Monkey testing](https://en.wikipedia.org/wiki/Monkey_testing) to some extend. The basic concept is to put our system under stress by providing it with random inputs. With model-based testing, we compare our system to a highly simplified version of it: the model.
+Model-based testing can also be referred to as [Monkey testing](https://en.wikipedia.org/wiki/Monkey_testing) to some extent. The basic concept is to put our system under stress by providing it with random inputs. With model-based testing, we compare our system to a highly simplified version of it: the model.
 
 :::info The model, a optional helper
 While the model part can assist you in writing your tests by storing intermediate states, past actions, or even mimicking the system, it is entirely optional. Model-based testing can be performed without it as well.