Increase event funding limits (#1945)

Decided by the board:
NixOS/foundation@86a4573

Author: infinisil

core/src/pages/community/event-funding.mdx

@@ -25,7 +25,7 @@ If you are planning an event that doesn't look like any of these, but you think
 
 # Budget
 
-We can spare up to €200 for a meetup and €800 for a sprint. But we're flexible, so exceptions are possible.
+We can spare up to €400 for a meetup and €1500 for a sprint. But we're flexible, so exceptions are possible.
 
 # How do I get re-imbursed?