Change arrow on back button (#420)

* Change arrow on back button

* Update DynamicPageBanner.html

routes/_components/DynamicPageBanner.html

@@ -43,7 +43,7 @@
     text-decoration: underline;
   }
   .dynamic-page-go-back::before {
-    content: '<';
+    content: '←';
     margin-right: 5px;
   }
   @media (max-width: 767px) {
@@ -70,4 +70,4 @@
       }
     }
   }
-</script>
+</script>