Update documentation

Author: MasterJ93

Sources/ATProtoKit/ATProtoKit.docc/Getting Started with ATProtoKit.md

@@ -55,7 +55,9 @@ Task {
 You can then create an ``ATProtoKit/ATProtoKit`` instance, where you can insert the ``ATProtocolConfiguration`` object in the `sessionConfiguration` parameter:
 
 ```swift
-let atProto = ATProtoKit(sessionConfiguration: config)
+Task {
+    let atProto = try await ATProtoKit(sessionConfiguration: config)
+}
 ```
 
 ### Creating a post

Sources/ATProtoKit/ATProtoKit.docc/Overview.md

@@ -28,7 +28,7 @@ Task {
     do {
         try await config.authenticate()
 
-        let atProto = ATProtoKit(sessionConfiguration: config)
+        let atProto = try await ATProtoKit(sessionConfiguration: config)
         let atProtoBluesky = ATProtoBluesky(atProtoKitInstance: atProto)
 
         let postResult = try await atProtoBluesky.createPostRecord(text: "Hello Bluesky!")