[Fuchsia] Fix bug link.

Change the link of blocking bug from internal to one that's public.

Bug: 1058247
Change-Id: I7848d87f4d80a63c99ad64113fa74f2d374a5716
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2086321Reviewed-by: weiliangc <weiliangc@chromium.org>
Commit-Queue: Chong Gu <chonggu@google.com>
Cr-Commit-Position: refs/heads/master@{#746972}

cc/BUILD.gn

@@ -805,7 +805,7 @@ cc_test("cc_unittests") {
     # TODO(samans): Support more configurations.
     # CFI issue: https://crbug.com/967819
     # LSAN issue: https://crbug.com/971325
-    # Fuchsia ARM64 issue: https://b/issues/146226835
+    # Fuchsia ARM64 https://crbug.com/1058247
     if ((use_x11 && !is_cfi && !is_lsan) ||
         (is_fuchsia && target_cpu == "x64")) {
       defines += [ "ENABLE_CC_VULKAN_TESTS" ]