qutebrowser: Fix index error on redirects

Fixed silly mistake sometimes trying to reach an out of range redirect
url.

qutebrowser/.config/qutebrowser/redirects.py

@@ -197,7 +197,7 @@ def rewrite(request: interceptor.Request):
                 matched=True
 
         if matched:
-            target = service["target"][random.randint(0, len(service["target"]))]
+            target = service["target"][random.randint(0, len(service["target"])-1)]
             if target is not None and url.setHost(target) is not False:
                 try:
                     request.redirect(url)