download:add beta links

root/usr/share/AdGuardHome/links.txt

@@ -1,2 +1,3 @@
 https://github.com/AdguardTeam/AdGuardHome/releases/download/${latest_ver}/AdGuardHome_linux_${Arch}.tar.gz
-https://static.adguard.com/adguardhome/release/AdGuardHome_linux_${Arch}.tar.gz
+https://static.adguard.com/adguardhome/release/AdGuardHome_linux_${Arch}.tar.gz
+#https://static.adguard.com/adguardhome/beta/AdGuardHome_linux_${Arch}.tar.gz