Add popular palindrome

In **main.py** on list **PALINDROMES** I consider to add the popular palindrome 

Before:
```
PALINDROMES = [
    'Acaso hubo buhos aca',
    'A la catalana banal atacala',
    'Amar da drama',
]
```

After:
```
PALINDROMES = [
    'Acaso hubo buhos aca',
    'A la catalana banal atacala',
    'Amar da drama',
    'Anita lava la tina',
]
```

Thanks is my first Issue report 🗡 