Only install manpages through make install

Other documentation are installed with %doc in Files section.

environment-modules.spec

@@ -80,10 +80,11 @@ This package provides Environment Modules compatibility version (3.2).
            --etcdir=%{_sysconfdir}/%{name} \
            --bindir=%{_datadir}/Modules/bin \
            --libexecdir=%{_datadir}/Modules/libexec \
-           --docdir=%{_docdir}/%{name} \
+           --mandir=%{_mandir} \
            --vimdatadir=%{vimdatadir} \
            --enable-multilib-support \
            --enable-compat-version \
+           --disable-doc-install \
            --enable-dotmodulespath \
            --disable-set-shell-startup \
            --with-python=/usr/bin/python3 \
@@ -122,7 +123,6 @@ mv {doc/build/,}MIGRATING.txt
 mv {doc/build/,}CONTRIBUTING.txt
 mv {doc/build/,}diff_v3_v4.txt
 mv {doc/,}example.txt
-rm -f %{buildroot}%{_docdir}/%{name}/{COPYING.GPLv2,ChangeLog-compat,INSTALL{,-win}.txt,NEWS-compat}
 
 cp -p script/createmodule.sh %{buildroot}%{_datadir}/Modules/bin