fix: fix breadcrumb dependency

Author: zthxxx

package.json

@@ -50,6 +50,7 @@
     "jszip": "3.1.5",
     "normalize.css": "7.0.0",
     "nprogress": "0.2.0",
+    "path-to-regexp": "^2.4.0",
     "screenfull": "3.3.3",
     "showdown": "1.8.6",
     "simplemde": "1.11.2",