fix: unexpected warning when using non-ASCII chars as filename.

Author: ulivz

lib/webpack/markdownLoader.js

@@ -57,6 +57,7 @@ module.exports = function (src) {
 
   // check if relative links are valid
   links && links.forEach(link => {
+    link = decodeURIComponent(link)
     const shortname = link
       .replace(/#.*$/, '')
       .replace(/\.html$/, '.md')