Include hengband-en.spec in the archive generated by 'make dist'

Resolves https://github.com/hengband/hengband/issues/3878 .

diff --git a/Makefile.am b/Makefile.am
index da64189..779d247 100644 (file)
--- a/Makefile.am
+++ b/Makefile.am
@@ -31,6 +31,7 @@ EXTRA_DIST = \
        readme-eng.md \
        THIRD-PARTY-NOTICES.txt \
        hengband.spec \
+       hengband-en.spec \
        $(visual_studio_files)
 
 SUBDIRS = src lib