Remove getDID and add getHandle

getDID isn't needed because the "id" property exists (which contains
the DID. However, the code for the getHandle method was
accidentally used for the getDID method. This has been resolved.

Author: MasterJ93

Sources/ATCommonWeb/TypeScript-bound/DIDDocument.swift

@@ -73,10 +73,10 @@ public struct DIDDocument: Codable {
         return true
     }
 
-    /// Attempts to get the decentralized identifier (DID) within the DID document.
+    /// Attempts to get the handle of the user account.
     ///
-    /// - Returns: The decentralized identifier (DID), or `nil` (if it can't find it).
-    public func getDID() -> String? {
+    /// - Returns: The handle of the user account, or `nil` (if it can't find it).
+    public func getHandle() -> String? {
         // This searches the array. If there's nothing in the array, it returns `nil`.
         // If there is an item in the array, it will stop looping when it finds
         // the entry that contains "at://" and returns it (without the "at://").