Update UPGRADE-2.16.md

Co-authored-by: Grégoire Paris <[email protected]>

Author: GromNaN

UPGRADE-2.16.md

@@ -2,7 +2,7 @@
 
 ## Package `doctrine/cache`
 
-The package `doctrine/cache` no longer required.
+The package `doctrine/cache` is no longer required.
 
 If you use `Doctrine\ODM\MongoDB\Configuration::getMetadataCacheImpl()`,
 then you need to require `doctrine/cache` explicitly in your `composer.json`;

src/Configuration.php

@@ -280,7 +280,7 @@ public function getMetadataDriverImpl(): ?MappingDriver
     public function getMetadataCacheImpl(): ?Cache
     {
         if (! class_exists(DoctrineProvider::class)) {
-            throw new LogicException('The "doctrine/cache" package is deprecated and no longer required by "doctrine/mongodb-odm". Use "getMetadataCache"');
+            throw new LogicException('The "doctrine/cache" package is deprecated and no longer required by "doctrine/mongodb-odm". Use "getMetadataCache" instead.');
         }
 
         trigger_deprecation(