Fix code style and update README with formatter modifier examples

Co-authored-by: henriquemoody <154023+henriquemoody@users.noreply.github.com>

Author: Copilot

README.md

@@ -35,6 +35,25 @@ echo f::create()
 // Output: 1234 12** **** 1234
 ```
 
+### Using Formatters as Modifiers
+
+The `PlaceholderFormatter` allows you to use any formatter as a modifier within templates:
+
+```php
+use Respect\StringFormatter\PlaceholderFormatter;
+
+$formatter = new PlaceholderFormatter([
+    'date' => '2024-01-15',
+    'amount' => '1234.56',
+    'phone' => '1234567890',
+]);
+
+echo $formatter->format('Date: {{date|date:Y/m/d}}, Amount: ${{amount|number:2}}, Phone: {{phone|pattern:(###) ###-####}}');
+// Output: Date: 2024/01/15, Amount: $1,234.56, Phone: (123) 456-7890
+```
+
+See the [PlaceholderFormatter documentation](docs/PlaceholderFormatter.md) and [FormatterModifier documentation](docs/modifiers/FormatterModifier.md) for more details.
+
 ## Formatters
 
 | Formatter                                                  | Description                                                      |

src/Modifiers/FormatterModifier.php

@@ -16,10 +16,10 @@
 use Respect\StringFormatter\Modifier;
 use Throwable;
 
+use function array_slice;
 use function explode;
 use function is_string;
 use function ucfirst;
-use function array_slice;
 
 final readonly class FormatterModifier implements Modifier
 {
@@ -70,7 +70,7 @@ private function tryCreateFormatter(string $name, array $arguments): Formatter|n
 
         try {
             $reflection = new ReflectionClass($class);
-            
+
             return $reflection->newInstanceArgs($arguments);
         } catch (ReflectionException) {
             return null;