Update unique.md

`faker.animal.type` now has **44** possible animals

```ts
import { faker } from "@faker-js/faker";

const animals = faker.helpers.uniqueArray(faker.animal.type, 1e3);

const animalSet = new Set(animals);

console.log(animals.length); // 44
console.log(animalSet.size); // 44
```

Author: s-inu

docs/guide/unique.md

@@ -10,7 +10,7 @@ faker.animal.type(); //'horse'
 faker.animal.type(); //'horse'
 ```
 
-Some methods and locales use much smaller data sets than others. For example, `faker.animal.type` has only 13 possible animals to choose from. In contrast, `faker.person.fullName()` pulls from a list of hundreds of first names, surnames, and prefixes/suffixes, so it can generate hundreds of thousands of unique names. Even then, the [birthday paradox](https://en.wikipedia.org/wiki/Birthday_Paradox) means that duplicate values will quickly be generated.
+Some methods and locales use much smaller data sets than others. For example, `faker.animal.type` has only 44 possible animals to choose from. In contrast, `faker.person.fullName()` pulls from a list of hundreds of first names, surnames, and prefixes/suffixes, so it can generate hundreds of thousands of unique names. Even then, the [birthday paradox](https://en.wikipedia.org/wiki/Birthday_Paradox) means that duplicate values will quickly be generated.
 
 Sometimes, you want to generate unique values. For example, you may wish to have unique values in a database email column.  
 There are a few possible strategies for this: