updated checkmark of success paragraph to fontawesome

Author: chrisvfritz

themes/vue/source/css/page.styl

@@ -155,7 +155,8 @@
         &.success
             border-left-color: $green
             &:before
-                content '✔'
+                content '\f00c'
+                font-family: FontAwesome
                 background-color $green
 
 .guide-links