Update shadowsocksr

luci-app-ssr-plus/root/etc/init.d/shadowsocksr

@@ -207,7 +207,7 @@ start_dns() {
 
 				ln_start_bin $(first_type chinadns-ng) chinadns-ng -l $china_dns_port -4 china -p 3 -c ${chinadns/:/#} -t 127.0.0.1#$dns_port -N -f -r
 
-				cat <<-EOF >> "$TMP_DNSMASQ_PATH/chinadns_fixed_server.conf"
+				cat <<-EOF > "$TMP_DNSMASQ_PATH/chinadns_fixed_server.conf"
 					no-poll
 					no-resolv
 					server=127.0.0.1#$china_dns_port