docs: fix code examples in README.md (#231)

Co-authored-by: Christopher Georg <christopher.georg@sr-travel.de>
Co-authored-by: Niels Vanpachtenbeke <10651054+Nielsvanpach@users.noreply.github.com>

README.md

@@ -65,7 +65,7 @@ You can also pass a specific year.
 ```php
 use Spatie\Holidays\Holidays;
 
-$holidays = Holidays::for(country: 'be', year: 2024))->get();
+$holidays = Holidays::for(country: 'be', year: 2024)->get();
 ```
 
 ### Getting holidays between two dates
@@ -81,7 +81,7 @@ $holidays = Holidays::for('be')->getInRange('2023-06-01', '2024-05-31');
 ### Getting holidays in a specific language
 
 ```php
-$holidays = Holidays::for(country: 'be', locale: 'fr'))->get();
+$holidays = Holidays::for(country: 'be', locale: 'fr')->get();
 ```
 
 If the locale is not supported for a country, an exception will be thrown.