QueryNormalizer: Remove ending ?.

Author: janbarasek

src/QueryNormalizer.php

@@ -43,6 +43,7 @@ class QueryNormalizer
 		'[,;]\s*\.\.\.+$' => '',
 		'[\.,;:]$' => '',
 		'\(\s(\d)' => '($1',
+		'\?$' => '',
 	];
 
 	/**