Adjust header separator margin

Author: niklaskors

packages/editor/src/app/main/components/Navigation.module.css

@@ -13,7 +13,7 @@
   height: 70%;
   width: 1px;
   background-color: #f3f3f3;
-  margin-left: 2.1em;
+  margin-left: 1.5em;
   margin-right: 0.8em;
 }