Update frontend.md

remove discord

Author: luceos

docs/extend/frontend.md

@@ -28,7 +28,7 @@ In order to do this transpilation, you need to be working in a capable environme
 * Node.js and npm ([Download](https://nodejs.org/en/download/))
 * Webpack (`npm install -g webpack`)
 
-This can be tricky because everyone's system is different. From the OS you're using, to the program versions you have installed, to the user access permissions – I get chills just thinking about it! If you run into trouble, ~~tell him I said hi~~ use [Google](https://google.com) to see if someone has encountered the same error as you and found a solution. If not, ask for help from the [Flarum Community](https://discuss.flarum.org) or on the [Discord chat](https://flarum.org/discord/).
+This can be tricky because everyone's system is different. From the OS you're using, to the program versions you have installed, to the user access permissions – I get chills just thinking about it! If you run into trouble, ~~tell him I said hi~~ use [Google](https://google.com) to see if someone has encountered the same error as you and found a solution. If not, ask for help from the [Flarum Community](https://discuss.flarum.org).
 
 It's time to set up our little JavaScript transpilation project. Create a new folder in your extension called `js`, then pop in a couple of new files. A typical extension will have the following frontend structure: