Update tests for array validation rule for Dingo router

Author: shalvah

tests/DingoGeneratorTest.php

@@ -142,7 +142,7 @@ public function testCanParseFormRequestRules()
                 case 'array':
                     $this->assertFalse($attribute['required']);
                     $this->assertSame('array', $attribute['type']);
-                    $this->assertCount(0, $attribute['description']);
+                    $this->assertCount(1, $attribute['description']);
                     break;
                 case 'between':
                     $this->assertFalse($attribute['required']);