Swift: Fix typo in change note

Author: jketema

swift/ql/lib/change-notes/2025-10-22-swift-6.2-class-changes.md

@@ -2,5 +2,5 @@
 category: breaking
 ---
 * The `OpenedArchetypeType` class has been renamed as `ExistentialArchetypeType`.
-* The `OtherAvailabilitySpec` class had been removed. Use `AvailabilitySpec::isWildcard` instead.
+* The `OtherAvailabilitySpec` class has been removed. Use `AvailabilitySpec::isWildcard` instead.
 * The `PlatformVersionAvailabilitySpec` has been removed. Use `AvailabilitySpec::getPlatform` and `AvailabilitySpec::getVersion` instead.