dns: update project descriptions as per official descriptions

README.md

@@ -341,8 +341,8 @@ _See also: [awesome-selfhosted/Database Management](https://github.com/awesome-s
 
 *DNS servers.*
 
-- [Bind](https://www.isc.org/bind/) - The most widely used name server software. ([Source Code](https://gitlab.isc.org/isc-projects/bind9))
-- [CoreDNS](https://coredns.io/) - Flexible DNS server written on Go. ([Source Code](https://github.com/coredns/coredns))
+- [Bind](https://www.isc.org/bind/) - Versatile, classic, complete name server software. ([Source Code](https://gitlab.isc.org/isc-projects/bind9))
+- [CoreDNS](https://coredns.io/) - Flexible DNS server. ([Source Code](https://github.com/coredns/coredns))
 - [Designate](https://wiki.openstack.org/wiki/Designate) - DNS REST API that support several DNS servers as its backend. ([Source Code](https://github.com/openstack/designate))
 - [djbdns](http://cr.yp.to/djbdns.html) - A collection of DNS applications, including tinydns. ([Source Code](https://salsa.debian.org/debian/djbdns))
 - [dnsmasq](https://www.thekelleys.org.uk/dnsmasq/doc.html) - A lightweight service providing DNS, DHCP and TFTP services to small-scale networks. ([Source Code](https://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=tree))