Updating vue-simple-mde to avoid 'marked' warning with vuejs 2.5

package.json

@@ -36,7 +36,7 @@
     "vue-i18n": "^7.3.2",
     "vue-router": "^3.0.0",
     "vue-shortkey": "^2.2.2",
-    "vue-simplemde": "^0.4.4",
+    "vue-simplemde": "^0.4.6",
     "vue-template-compiler": "^2.5.2"
   }
 }