[skip ci] Fix issue board avatar counter scss

app/assets/stylesheets/pages/boards.scss

@@ -284,11 +284,10 @@
     .avatar-counter {
       display: none;
       vertical-align: middle;
-      min-width: 20px;
-      line-height: 19px;
+      line-height: 18px;
       height: 20px;
-      padding-left: 2px;
-      padding-right: 2px;
+      padding-left: 3px;
+      padding-right: 3px;
       border-radius: 2em;
     }