Apply fixes from StyleCI

Author: spawnia

src/JSON.php

@@ -38,9 +38,10 @@ public function parseLiteral($valueNode, ?array $variables = null)
      * Try to decode a user-given JSON value.
      *
      * @param mixed $value A user given JSON
-     * @return mixed The decoded value
      *
      * @throws Error
+     *
+     * @return mixed The decoded value
      */
     protected function decodeJSON($value)
     {

src/StringScalar.php

@@ -6,7 +6,6 @@
 
 use GraphQL\Error\Error;
 use GraphQL\Error\InvariantViolation;
-use GraphQL\Language\AST\Node;
 use GraphQL\Type\Definition\ScalarType;
 use GraphQL\Utils\Utils as GraphQLUtils;
 

src/Utils.php

@@ -28,6 +28,7 @@ public static function canBeString($value): bool
      * Get the underlying string from a GraphQL literal and throw if Literal is not a string.
      *
      * @param Node&ValueNode $valueNode
+     *
      * @throws Error
      */
     public static function extractStringFromLiteral(Node $valueNode): string