Update bug-11518-types-php7.php

Author: staabm

tests/PHPStan/Analyser/nsrt/bug-11518-types-php7.php

@@ -1,6 +1,6 @@
 <?php // lint < 8.0
 
-namespace Bug11518Types;
+namespace Bug11518TypesPhp7;
 
 use function PHPStan\Testing\assertType;