flag as executable

Author: ctron

README.md

@@ -4,21 +4,21 @@ This website is built using [Docusaurus 2](https://docusaurus.io/), a modern sta
 
 ### Installation
 
-```
+```shell
 npm install
 ```
 
 ### Local Development
 
-```
+```shell
 npm run start
 ```
 
 This command starts a local development server and opens up a browser window. Most changes are reflected live without having to restart the server.
 
 ### Build
 
-```
+```shell
 npm run build
 ```