8339271: giflib attribution correction

Reviewed-by: dnguyen, prr

Author: Alisen Chung

src/java.desktop/share/legal/giflib.md

@@ -23,8 +23,13 @@ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 
+---------------------------------
+The below applies to the following file(s):
+giflib/openbsd-reallocarray.c
+
+Copyright (C) 2008 Otto Moerbeek <[email protected]>
+SPDX-License-Identifier: MIT
 
-tree/README
 
 == Authors ==
 
@@ -38,13 +43,4 @@ former maintainer
 Eric Raymond <esr[AT]snark.thyrsus.com>
 current as well as long time former maintainer of giflib code
 
-There have been many other contributors; see the attributions in the
-version-control history to learn more.
-
-
-tree/openbsd-reallocarray.c
-
-Copyright (C) 2008 Otto Moerbeek <[email protected]>
-SPDX-License-Identifier: MIT
-
 ```