workshop-vienna: Use "workshop" instead of hackathon

Signed-off-by: Razvan Deaconescu <razvand@unikraft.io>

Author: razvand

content/hackathons/2024-12-vienna/index.mdx

@@ -1,7 +1,7 @@
 ---
 title: Vienna 2024
 slug: /hackathons/2024-12-vienna
-description: Vienna Unikraft Hackathon, December 7-8, 2024
+description: Vienna Unikraft Workshop, December 7-8, 2024
 startDate: 2024-12-7
 registerForm: https://forms.gle/oZzjm4bNUsWaf9C97
 image: /hackathons/workshop-vienna24.png
@@ -18,7 +18,7 @@ Unikraft and [SBA Research](https://www.sba-research.org/), together with [Natio
 The workshop will take place as an in-person event at the [SBA Research](https://www.sba-research.org/about/contact/).
 The full address is [SBA Research, Floragasse 7, 5th Floor, 1040, Vienna, Austria](https://maps.app.goo.gl/RF4DM83zz9qrLMBk7).
 
-Support information and discussions will take place on [Discord](http://bit.ly/UnikraftDiscord), on the `#hack-vienna24` channel.
+Support information and discussions will take place on [Discord](http://bit.ly/UnikraftDiscord), on the `#workshop-vienna24` channel.
 
 ### Registration