Update "join discord link" in README.md (#846)

The current link is a link to a channel in a server which only works if you are already in the discord. This PR Replaces it with the invite link <https://discord.com/invite/bnRNgZjgPh> which I found on the datastar website: <https://data-star.dev/>

Author: GlenDC

README.md

@@ -28,7 +28,7 @@ Visit the [Datastar Website »](https://data-star.dev/)
 
 Watch the [Videos »](https://www.youtube.com/@data-star)
 
-Join the [Discord Server »](https://discord.com/channels/1296224603642925098/1296224603642925102)
+Join the [Discord Server »](https://discord.com/invite/bnRNgZjgPh)
 
 ## Getting Started
 
@@ -59,4 +59,4 @@ You can manually add your own plugins to the core:
 </script>
 ```
 
-[![Star History Chart](https://api.star-history.com/svg?repos=starfederation/datastar&type=Date)](https://www.star-history.com/#starfederation/datastar&Date)
+[![Star History Chart](https://api.star-history.com/svg?repos=starfederation/datastar&type=Date)](https://www.star-history.com/#starfederation/datastar&Date)