Update README.md

Author: phocodes

README.md

@@ -18,8 +18,8 @@ $ node glang.js dev:true test.g # start the interpreter
 ```
 
 or if your using deno(make sure you allow the permissions)
-```
-deno run glang.js
+```sh
+$ deno run glang.js
 ```
 
 `dev:true` can also be `dev:false`, its ment to display more data. Also you can put `verbose` instead of `dev:true` to get more loggs on whats happening.