Update CSS for release-v2 h5 tags

Signed-off-by: Chris Cranford <chris@hibernate.org>

Author: Naros

assets/css/custom.css

@@ -10968,6 +10968,11 @@ div.content > img {
     margin-top: 20px;
 }
 
+.post.release-v2 h5 {
+  margin-top: 20px;
+  text-decoration: underline;
+}
+
 .byline .label {
     line-height: 20px;
 }