Update README.md

Update Discord invite

README.md

@@ -1,6 +1,6 @@
 # VzBoT  <a href='https://ko-fi.com/vez3d' target='_blank'><img height='46' style='border:0px;height:46px;' src='https://az743702.vo.msecnd.net/cdn/kofi3.png?v=0' border='0' alt='Buy Me a Coffee at ko-fi.com' /></a> 
 
-![Join us on Discord](https://discordapp.com/api/guilds/829828765512106054/widget.png?style=banner2)
+[![Discord Invite](https://discordapp.com/api/guilds/829828765512106054/widget.png?style=banner2)](https://discord.gg/KWZWvCMxCq)
 
 High speed, moderately sized 3D-printer, based on the TronXY XS5(A) CoreXY frame,
 but can be easily adapted for other 2020 aluminium extrusion frames.