Update query-builder.rst

Author: BenMorel

docs/en/reference/query-builder.rst

@@ -332,13 +332,13 @@ Most notably you can use expressions to build nested And-/Or statements:
         ->select('id', 'name')
         ->from('users')
         ->where(
-            $queryBuilder->expr()->andX(
+            $queryBuilder->expr()->and(
                 $queryBuilder->expr()->eq('username', '?'),
                 $queryBuilder->expr()->eq('email', '?')
             )
         );
 
-The ``andX()`` and ``orX()`` methods accept an arbitrary amount
+The ``and()`` and ``or()`` methods accept an arbitrary amount
 of arguments and can be nested in each other.
 
 There is a bunch of methods to create comparisons and other SQL snippets