Make support button font consistent with other buttons

Author: josh-wong

src/css/custom.css

@@ -293,7 +293,8 @@ html[data-theme="dark"] .tooltip-glossary {
   color: var(--ifm-navbar-link-color);
   cursor: pointer;
   display: flex;
-  font-size: 14px;
+  font-family: var(--ifm-font-family-base);
+  font-size: 14.5px;
   font-weight: var(--ifm-font-weight-semibold);
   justify-content: space-between;
   min-width: 145px;