Update README

README.md

@@ -39,7 +39,7 @@ AppState is a Swift Package that simplifies the management of application state
 - **OptionalConstant:** Allows users to access a specific part of AppState's state. Useful if the state value is optional.
 - 🍎 **SecureState:** Securely stores its string values using the Keychain.
 - **AppDependency:** Simplifies the handling of dependencies throughout your application.
-- 🍎 **ObservedDependency:** Simplifies the handling of dependencies throughout your application. Backed by an `@ObservedObject` to publish changes to SwiftUI views.
+- 🍎 **ObservedDependency:** Simplifies the handling of dependencies throughout your application. Dependencies must conform to ObservableObject. Backed by an `@ObservedObject` to publish changes to SwiftUI views.
 
 ## Getting Started