Edit Quick-Answers Dogfood link

The current https go-link is not getting redirected properly. As
suggested in go/faq#keep-the-presentation-clean1 as a best practice, the
go link should be prefixed by either http or a complete goto URL for the
https version.

Bug: b:159237992
Test: Tested on Chrome OS VM and Atlas test device.
Change-Id: Icb1e60a1dc057b6f5b64f064ac485303ea09edf4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2250823Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Abhijeet Singh <siabhijeet@google.com>
Cr-Commit-Position: refs/heads/master@{#779531}

ash/quick_answers/quick_answers_controller_impl.cc

@@ -23,7 +23,8 @@ using chromeos::quick_answers::ResultType;
 
 constexpr char kAssistantRelatedInfoUrl[] =
     "chrome://os-settings/googleAssistant";
-constexpr char kDogfoodUrl[] = "https://go/quick-answers-dogfood-bugs";
+constexpr char kDogfoodUrl[] =
+    "https://goto.google.com/quick-answers-dogfood-bugs";
 
 // TODO:(yanxiao) move the string to grd source file.
 constexpr char kNoResult[] = "See result in Assistant";