[luci-notify] Update ViewURL tag.
[luci-notify] Update ViewURL tag.

Updating the ViewURL as it appears that it should be ViewUrl in testing
the ChromeOS notifications.

Bug: None
Change-Id: Id7bc4122fef4c61f5586346881be05c63957cde4
Reviewed-on: https://chromium-review.googlesource.com/1093378
Reviewed-by: Nodir Turakulov <ef4933a197ef7b4b3f55f1bec4942aead3637a2a@chromium.org>
Commit-Queue: Nodir Turakulov <ef4933a197ef7b4b3f55f1bec4942aead3637a2a@chromium.org>

luci/luci-go,luci/luci-go,luci/luci-go,luci/luci-go,luci/luci-go,luci/luci-go