Remove Font Awesome 5 message about the level-up icon (#3407)

Author: schloerke

R/showcase.R

@@ -134,7 +134,7 @@ showcaseCodeTabs <- function(codeLicense) {
     a(id="showcase-code-position-toggle",
       class="btn btn-default btn-sm",
       onclick="toggleCodePosition()",
-      icon("level-up"),
+      icon("level-up-alt"),
       "show with app"),
     ul(class="nav nav-tabs",
        navTabsHelper(rFiles),