Update debian mirror to httpredir (#1105)

According to: https://wiki.debian.org/DebianGeoMirror
7 years ago · e858d5e6cb
1 changed files with 1 additions and 1 deletions
--- a/README.md
+++ b/README.md
@ -96,7 +96,7 @@ sudo apt install shadowsocks-libev
 For Debian Jessie users, please install it from `jessie-backports`:

 ```bash
-sudo sh -c 'printf "deb http://ftp.debian.org/debian jessie-backports main" > /etc/apt/sources.list.d/jessie-backports.list'
+sudo sh -c 'printf "deb http://httpredir.debian.org/debian jessie-backports main" > /etc/apt/sources.list.d/jessie-backports.list'
 sudo apt update
 sudo apt -t jessie-backports install shadowsocks-libev
 ```