Fix some typos in Berlin 2025 (#2368)

Author: mxsasha

docs/_data/berlin-2025-config.yaml

@@ -114,7 +114,7 @@ grants:
 date: # how do we handle these? human readable would be nice.
   main: "**Oct 27-28, 2025**"
   short: Oct 27-28, 2025
-  tickets_live: "June 2024"
+  tickets_live: "June 2025"
   month: October
 
   # Conference is special for the index to show the combined conference days

docs/conf/berlin/2025/news/welcome.rst

@@ -41,7 +41,7 @@ Virtual tickets will not be limited.
 Sponsorship
 -----------
 
-We are working to revamp our sponsorship program for this year based on feedback previous events.
+We are working to revamp our sponsorship program based on feedback from previous events.
 We will be announcing our new sponsorship levels soon,
 but if you are already excited about sponsoring, reach out to us at [email protected].