Fix typo.

Author: engcom-Kilo

app/code/Magento/PageCache/etc/graphql/di.xml

@@ -7,6 +7,6 @@
 -->
 <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
     <type name="Magento\Framework\App\FrontControllerInterface">
-        <plugin name="page_cache_from_key_from_cookie" type="Magento\PageCache\Plugin\RegisterFormKeyFromCookie" />
+        <plugin name="page_cache_form_key_from_cookie" type="Magento\PageCache\Plugin\RegisterFormKeyFromCookie" />
     </type>
 </config>