Fix installer error

install.sh

@@ -7,7 +7,7 @@ BINDIR="${PREFIX}/bin"
 DESKTOPDIR="${PREFIX}/share/applications"
 ICONDIR="${PREFIX}/share/icons/hicolor"
 DOCDIR="${PREFIX}/share/doc/yms"
-MANDIR="${PREFIX}/usr/local/share/man/man1"
+MANDIR="${PREFIX}/share/man/man1"
 LOCALEDIR="${PREFIX}/share/locale"
 
 SOURCEDIR=$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)
@@ -20,6 +20,7 @@ if [ "$1" = "uninstall" ]; then
     rm -f "${BINDIR}/yms"
     rm -f "${DESKTOPDIR}/yms.desktop"
     rm -rf "${DOCDIR}"
+    rm -f "${MANDIR}/yms.1"
     rm -f "${LOCALEDIR}/de/LC_MESSAGES/ymsgui.mo"
 
     rm -f "${ICONDIR}/scalable/apps/yms.svg"