Style Modifiers update some docblocks

Author: kudashevs

src/Modifiers/NumericModifier.php

@@ -21,6 +21,9 @@ public function modify(array $sequences): array
         return array_unique($withoutNumeric);
     }
 
+    /**
+     * @return array<array-key, string>
+     */
     protected function splitByNumeric(string $sequence): array
     {
         $parts = preg_split('/\b\d+\b/', $sequence);

src/Modifiers/PossessionModifier.php

@@ -9,6 +9,9 @@
  */
 class PossessionModifier implements Modifier
 {
+    /**
+     * @inheritDoc
+     */
     public function modify(array $sequences): array
     {
         return array_map(function ($sequence) {