fixed typo

Author: ecloud-jay

src/eCloud/Entities/ResourceTier.php

@@ -16,9 +16,9 @@ class ResourceTier extends Entity
     protected $dates = ['createdAt', 'updatedAt'];
 
     public static $entityMap = [
-        'id' => '$id',
-        'name' => '$name',
-        'availability_zone_id' => '$availabilityZoneId',
+        'id' => 'id',
+        'name' => 'name',
+        'availability_zone_id' => 'availabilityZoneId',
         'created_at' => 'createdAt',
         'updated_at' => 'updatedAt',
     ];