Apply fixes from StyleCI

Author: StyleCIBot

src/Illuminate/Collections/Collection.php

@@ -1663,11 +1663,12 @@ public function offsetSet($key, $value)
     /**
      * Unset the item at a given offset.
      *
-<<<<<<< HEAD
+     * <<<<<<< HEAD
+     *
      * @param  TKey  $key
-=======
+     *                     =======
      * @param  mixed  $key
->>>>>>> 8.x
+     *                      >>>>>>> 8.x
      * @return void
      */
     #[\ReturnTypeWillChange]