Trim value as well

We don't know if the given parameter value is trimmed or not

Author: thofman

src/Domain/Question/Sanitization/StringSanitizer.php

@@ -7,6 +7,6 @@
 {
     public function sanitize(string $value): string
     {
-        return htmlspecialchars(strip_tags($value));
+        return htmlspecialchars(strip_tags(trim($value)));
     }
 }