Update title_scroll.py

Author: nleytem

python/title_scroll.py

@@ -4,14 +4,14 @@
 SCRIPT_AUTHOR = "nleytem"
 SCRIPT_EMAIL = "nmleytem@gmail.com"
 SCRIPT_VERSION = "1.0.0"
-SCRIPT_LICENSE = "GPL3"
+SCRIPT_LICENSE = "GPL-3.0-only"
 SCRIPT_DESC = (
     "Auto-scrolls buffer titles that don't fit the window width, "
     "marquee-style, with a marker between the end and repeated start "
     "(note: embedded title colors are stripped while scrolling)"
 )
 COPYRIGHT = "SPDX-FileCopyrightText: 2026 Nick Leytem <nmleytem@gmail.com>"
-LICENSE = "SPDX-License-Identifier: GPL3"
+LICENSE = "SPDX-License-Identifier: GPL-3.0-only"
 
 try:
     import weechat  # type: ignore[import]