change overflow css in Workflow Editor to allow README to scroll better

Author: ahmedhamidawan

client/src/components/Workflow/Editor/Index.vue

@@ -1169,7 +1169,8 @@ export default {
     display: flex;
     flex-direction: column;
     flex-grow: 1;
-    overflow: auto;
+    overflow-x: auto;
+    overflow-y: hidden;
     width: 100%;
 }
 </style>