Fix line height

Screenshot: https://imgur.com/a/TaOuQAN
Change-Id: I7a905c59f536987e6152f1c88ce7bf111fdf2b6f

ui/owner-requirement.js

diff --git a/ui/owner-requirement.js b/ui/owner-requirement.js
index c15fcf3..f456e65 100644
--- a/ui/owner-requirement.js
+++ b/ui/owner-requirement.js
@@ -55,6 +55,9 @@
         gr-button {
           padding-left: var(--spacing-m);
         }
+        gr-button::part(paper-button) {
+          padding: 0 var(--spacing-s);
+        }
         a {
           text-decoration: none;
         }