minor symfony#20615 Replace left over "annotation" by "attribute" (sascha-egerer)

This PR was submitted for the 7.1 branch but it was merged into the 6.4 branch instead.

Discussion
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Replace left over "annotation" by "attribute"

Commits
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6a70a7a Replace left over "annotation" by "attribute"

Author: OskarStark

components/validator/resources.rst

@@ -163,7 +163,7 @@ the metadata from the attributes of the class. For example::
 To enable the attribute loader, call the
 :method:`Symfony\\Component\\Validator\\ValidatorBuilder::enableAttributeMapping` method.
 
-To disable the annotation loader after it was enabled, call
+To disable the attribute loader after it was enabled, call
 :method:`Symfony\\Component\\Validator\\ValidatorBuilder::disableAttributeMapping`.
 
 Using Multiple Loaders