Fixes examples of worldborder expand/shrink effect (#7935)

Fix examples

Fixes examples (in -> over)

Co-authored-by: Efnilite <35348263+Efnilite@users.noreply.github.com>

Author: TheMug06

src/main/java/ch/njol/skript/effects/EffWorldBorderExpand.java

@@ -26,8 +26,8 @@
 	"Using `to` sets to the specified size."
 })
 @Examples({
-	"expand world border of player by 100 in 5 seconds",
-	"shrink world border of world \"world\" to 100 in 10 seconds"
+	"expand world border of player by 100 over 5 seconds",
+	"shrink world border of world \"world\" to 100 over 10 seconds"
 })
 @Since("2.11")
 public class EffWorldBorderExpand extends Effect implements SyntaxRuntimeErrorProducer {