[CrOS Network] Remove extra padding above/below nameservers values.

Bug: 966386
Change-Id: Ic3c7e2e5cc6848fabdb7f35a753024e75bfdd783
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1750090
Auto-Submit: Kyle Horimoto <khorimoto@chromium.org>
Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Commit-Queue: Kyle Horimoto <khorimoto@chromium.org>
Cr-Commit-Position: refs/heads/master@{#686462}

ui/webui/resources/cr_components/chromeos/network/network_nameservers.html

@@ -32,6 +32,8 @@
       .nameservers {
         /* Aligns with the start of cr-radio-button's text. */
         margin-inline-start: 38px;
+        padding-bottom: 0;
+        padding-top: 0;
       }
 
       .nameservers:not([changeable]) {