TT#68016 selenium: actually use correct path for saving screenshots

FirefoxExtensions.pm:
- screenshots should save in /results instead of wherever he wanted to save
them in the first place

Change-Id: I0ff5a5876636bf14a2b898cb75c7ff8acd0ac259

t/lib/Selenium/Remote/Driver/FirefoxExtensions.pm

@@ -113,7 +113,7 @@ sub get_text_safe {
         my $element = $self->find_element($path, $type);
         return $element->get_text();
     } catch {
-        $self->capture_screenshot('alert' . int(rand(1000)));
+        $self->capture_screenshot('/results/alert' . int(rand(1000)));
         return 'Element not found';
     };
 }