A few minor fixes to BTextControl docs

docs/user/interface/TextControl.dox

@@ -1,5 +1,5 @@
 /*
- * Copyright 2001-2014 Haiku, Inc. All rights reserved.
+ * Copyright 2014 Haiku, Inc. All rights reserved.
  * Distributed under the terms of the MIT License.
  *
  * Authors:
@@ -147,6 +147,8 @@
 
 /*!
 	\fn status_t BTextControl::AllUnarchived(const BMessage* from)
+	\brief Hook method called when all views have been unarchived.
+
 	\copydetails BView::AllUnarchived()
 */
 
@@ -543,4 +545,4 @@
 /*!
 	status_t BTextControl::SetIcon(const BBitmap* icon, uint32 flags)
 	\copydoc BControl::SetIcon()
-*/
+*/