Relay docs: Fix shell script getting Prism'd as a JS comment

Summary:
Problem: bash script is shown "commented out" (due to ...`/*` being part of this shell snippet)  because we default to a C/JS-style interpretation -> highlighting of the code.

 {F1482854795}

Reviewed By: alichtman

Differential Revision: D55943931

fbshipit-source-id: 0ef3e6163ec55c30675252d8b6f3962fdb83b8b4

website/docs/tutorial/queries-2.md

@@ -27,7 +27,7 @@ If data is lower-priority and should be loaded after the main data has loaded, b
 
 We’ve already prepared a hovercard component that you can put to use. However, it has been in a directory called `future` in order to avoid compilation errors since it uses `ImageFragment`. Now that we’re at this stage of the tutorial, you can move the modules in `future` into `src/components`:
 
-```
+```shell
 mv future/* src/components
 ```