[10.x] Documents Feature::values() (#8559)

* Documents `Feature::values()`

* Update pennant.md

---------

Co-authored-by: Taylor Otwell <[email protected]>

Author: timacdonald

pennant.md

@@ -523,6 +523,17 @@ Pennant's included Blade directive also makes it easy to conditionally render co
 @endfeature
 ```
 
+If you would like to retrieve multiple feature values at once for a single scope, you may use the `values` method:
+
+```php
+Feature::values(['new-api', 'purchase-button']);
+
+// [
+//     'new-api' => false,
+//     'purchase-button' => 'tart-orange',
+// ]
+```
+
 > **Note** When using rich values, it is important to know that a feature is considered "active" when it has any value other than `false`.
 
 <a name="eager-loading"></a>