Add missing doc

Author: eonist

Sources/UpgradeAlert/UpgradeAlert.swift

@@ -73,9 +73,15 @@ extension UpgradeAlert {
  */
 extension UpgradeAlert {
    /**
-    * fixme: add doc
+    * A typealias for the completion handler used in network calls to fetch `AppInfo`.
+    * - Description: This completion handler is invoked after attempting to fetch app information from the App Store. It provides either the `AppInfo` object upon success or a `UAError` if an error occurred during the fetch operation.
+    * - Parameters:
+    *   - AppInfo?: An optional `AppInfo` object containing the app's metadata retrieved from the App Store.
+    *   - UAError?: An optional `UAError` describing any error encountered during the network request.
+    * - Remark: This typealias simplifies the signature of completion handlers used in asynchronous network operations within the `UpgradeAlert` module.
     */
    typealias Completion = (AppInfo?, UAError?) -> Void
+   typealias Completion = (AppInfo?, UAError?) -> Void
    /**
     * - Description: Retrieves the app information from the App Store using a network request. This function fetches the JSON data from the App Store API and decodes it to `AppInfo` format, handling errors appropriately.
     * let url = URL(string: "http://www.")

Sources/UpgradeAlert/helper/AppInfo.swift

@@ -31,7 +31,10 @@ public struct AppInfo: Decodable {
     */
    public let trackViewUrl: String
    // ⚠️️ new
-   // fixme: add doc
+   /**
+    * The release date of the current version of the application.
+    * - Description: Specifies the date when the current version of the application was released on the App Store, represented as a string. This information is used to determine if the app was released recently and to adjust update prompts accordingly.
+    */
     public let currentVersionReleaseDate: String
    /**
     * Initializes a new instance of `AppInfo`.