adjust file comments

l3ref-tmp.sty

@@ -1,12 +1,6 @@
+%% This is file `l3ref-tmp.sty',
 %%
-%% This is file `l3ref.sty',
-%% generated with the docstrip utility.
-%%
-%% The original source files were:
-%%
-%% l3ref.dtx  (with options: `package')
-%%
-%% Copyright (C) 2020 The LaTeX3 Project
+%% Copyright (C) 2020-2021 The LaTeX Project
 %%
 %% It may be distributed and/or modified under the conditions of
 %% the LaTeX Project Public License (LPPL), either version 1.3c of
@@ -15,10 +9,9 @@
 %%
 %%    http://www.latex-project.org/lppl.txt
 %%
-%% This file is part of the "l3ref bundle" (The Work in LPPL)
-%% and all files in that bundle must be distributed together.
+%% This file is a tmp file in placed of a future kernel module
+%% and subject to change without notice.
 %%
-%% File: l3ref.dtx
 \ProvidesExplPackage{l3ref-tmp}{2021-06-23}{}
   {L3 Experimental cross-referencing}
 \cs_new_protected:Npn \ref_attribute_gset:nnnn #1#2#3#4