Update AppCheckOptions.swift

Co-authored-by: Nick Cooke <[email protected]>

Author: daymxn

FirebaseAI/Sources/AppCheckOptions.swift

@@ -25,7 +25,7 @@ public struct AppCheckOptions: Sendable, Hashable, Equatable {
   ///
   /// - Parameters:
   ///   - requireLimitedUseTokens: When sending tokens to the backend, this option enables
-  ///     the usage of App Check's `limitedUseTokens` instead of the standard cached tokens.
+  ///     the usage of App Check's limited-use tokens instead of the standard cached tokens.
   ///
   ///     A new limited-use tokens will be generated for each request; providing a smaller attack
   ///     surface for malicious parties to hijack tokens. When used alongside [replay protection](https://firebase.google.com/docs/app-check/custom-resource-backend#replay-protection),