Remove syntax highlight in directory structure block

wyudong · PanJiaChen · commit 2e006f265808 · 2017-05-12T13:51:25.000+08:00
diff --git a/README-en.md b/README-en.md
@@ -77,7 +77,7 @@ npm run build:prod
 
 ## Directory structure
 
-```shell
+```
 ├── build                      // build 
 ├── config                     // config
 ├── src                        // source code
