Fix: fix typo

lib/routes/search.js

@@ -46,9 +46,9 @@ module.exports = function(crowi, app) {
 
     var doSearch;
     if (tree) {
-      doSearch = this.searchKeywordUnderPath(keyword, tree, {});
+      doSearch = search.searchKeywordUnderPath(keyword, tree, {});
     } else {
-      doSearch = this.searchKeyword(keyword, {});
+      doSearch = search.searchKeyword(keyword, {});
     }
     var result = {};
     doSearch