Merge branch 'patch-1' into 'master'

Update _index.md

See merge request !3

_index.md

@@ -34,7 +34,7 @@ We moved from our [Hamburg GitLab](https://gitlab.hamburg.ccc.de/card10/) to:
 - [FAQ](/en/faq)
 - Events
   - Upcoming:
-     - Card10 meetup in Berlin: xHain 07.06. 19:00
+     - Card10 meetup in Berlin: xHain 14.06. 19:00
   - Previous
      - CCCamp 2019 Badge at #eh19 (easterhegg2019): [Description](https://conference.c3w.at/eh19/talk/DA7KTT/), [Recording](https://media.ccc.de/search/?q=CCCamp+Badge+Talk)
      - CCCamp2019 Badge Workshop at #eh19: [Description](https://conference.c3w.at/eh19/talk/VHFMJ7/), 2019-04-21, 14:30–15:30