Footer: add GP link (#1812)

* Footer: add GP link

* Footer: fix GP link content

Author: xbpcb

views/_partials/footer.pug

@@ -10,8 +10,15 @@ footer.border-top.bg-white.mt-auto
                 |
                 a.text-decoration-none(href='https://www.jsdelivr.com/')
                     | jsDelivr
+                |
+                | and
+                |
+                a.text-decoration-none(href='https://globalping.io/')
+                    | Globalping
+                    |
+                    | network testing platform
             .text-center.text-lg-left
-                | and sponsored by
+                | Sponsored by
                 |
                 each friend, index in config.app.friends
                     if (index === config.app.friends.length - 1)