correct the number of seats up for re-election

Signed-off-by: Nabarun Pal <[email protected]>

Author: palnabarun

elections/steering/2022/README.md

@@ -26,7 +26,7 @@
 
 ## Purpose
 
-The role of this election is to fill out the four (4) seats due for
+The role of this election is to fill out the three (3) seats due for
 reelection this year on the [Kubernetes Steering Committee]. Each elected
 member will serve a two (2) year term.