Miscellaneous docblock fixes

Author: PHLAK

src/Config/Config.php

@@ -13,6 +13,8 @@ abstract class Config
      * @param mixed $option A given option
      *
      * @throws \PHLAK\Twine\Exceptions\InvalidConfigOptionException
+     *
+     * @return void
      */
     public static function validateOption($option)
     {

src/Traits/ArrayAccess.php

@@ -32,7 +32,12 @@ public function offsetGet($offset)
     /**
      * Not implemented due to immutability.
      *
+     * @param $offset Not implemented
+     * @param $value Not implemented
+     *
      * @throws \RuntimeException
+     *
+     * @return void
      */
     public function offsetSet($offset, $value)
     {
@@ -42,7 +47,11 @@ public function offsetSet($offset, $value)
     /**
      * Not implemented due to immutability.
      *
+     * @param $offset Not implemented
+     *
      * @throws \RuntimeException
+     *
+     * @return void
      */
     public function offsetUnset($offset)
     {

src/Traits/Transformable.php

@@ -129,7 +129,7 @@ public function shuffle()
         return new static(str_shuffle($this->string));
     }
 
-    /*
+    /**
      * Repeat the string multiple times.
      *
      * @param int $multiplier Number of times to repeat the string