sde-download: fixed typo in warning message

bin/sde-download

@@ -3,7 +3,7 @@
 # This copyright note is auto-generated by ./scripts/Create-CopyPatch.
 #
 # Filename: bin/sde-download
-# Copyright (C) 2006 - 2010 The OpenSDE Project
+# Copyright (C) 2006 - 2011 The OpenSDE Project
 # Copyright (C) 2004 - 2006 The T2 SDE Project
 # Copyright (C) 1998 - 2003 Clifford Wolf
 #
@@ -533,7 +533,7 @@ download_file_now() {
 		      *.tar)
 			  typeexpr="tar archive" ;;
 		      *)
-			  echo "WARNING: Unkown file extension: $gzfile"
+			  echo "WARNING: Unknown file extension: $gzfile"
 			  typeexpr="." ;;
 		    esac
 		    if file "$gzfile.incomplete" | grep -v "$typeexpr"