fix: cannot get sidebar when sidebar config contains non-ASCII chars. (…

…close: #628)

lib/default-theme/util.js

@@ -4,7 +4,7 @@ export const endingSlashRE = /\/$/
 export const outboundRE = /^(https?:|mailto:|tel:)/
 
 export function normalize (path) {
-  return path
+  return decodeURI(path)
     .replace(hashRE, '')
     .replace(extRE, '')
 }