fixed margins of help icon

Former-commit-id: 00d3e0ed0b5df9509cc97d1c9fa7fffd01bf4a2d

extension/ui/pages/options.css

@@ -109,8 +109,8 @@ h3 a {
     border: 1px black solid;
     opacity: .2;
     width: 12px;
-    margin-top: 3px;
-    margin-bottom: 3px;
+    margin-top: 4px;
+    margin-bottom: 2px;
     margin-left: 8px;
     margin-right: 8px;
     transition: opacity;