The Windows installer shows LICENSE on its license page, where the
2022 copyright line reads as outdated. Extend the range to 2022-2026
in LICENSE, its REUSE copy, and the installer's LegalCopyright, keeping
2022 as the year of first publication.
The first line of LICENSE spelled BSD-3-Clause with non-breaking
hyphens (U+2011). The Windows NSIS installer shows LICENSE on its
license page and reads it in the system ANSI code page, so the UTF-8
bytes rendered as "BSD‑3‑Clause". Plain hyphens also match the
SPDX identifier and keep the file ASCII-only.