dns control panels: update descriptions as per official descriptions

README.md

@@ -359,8 +359,8 @@ _See also: [awesome-selfhosted/Database Management](https://github.com/awesome-s
 *DNS server control panels.*
 
 - [Atomia DNS](https://atomiadns.com/) - DNS management system. ([Source Code](https://github.com/atomia/atomiadns/)) `ISC` `Perl`
-- [Pi-hole](https://pi-hole.net/) - A blackhole for Internet Advertisements with a gui for managing and monitoring. ([Source Code](https://github.com/pi-hole/pi-hole)) `EUPL-1.2` `Shell/PHP`
-- [Poweradmin](https://www.poweradmin.org/) - Friendly web-based DNS administration tool for PowerDNS server. ([Source Code](https://github.com/poweradmin/poweradmin)) `GPL-3.0` `PHP`
+- [Pi-hole](https://pi-hole.net/) - A blackhole for Internet qdvertisements with a GUI for management and monitoring. ([Source Code](https://github.com/pi-hole/pi-hole)) `EUPL-1.2` `Shell/PHP`
+- [Poweradmin](https://www.poweradmin.org/) - Web-based DNS control panel for PowerDNS server. ([Source Code](https://github.com/poweradmin/poweradmin)) `GPL-3.0` `PHP`
 
 
 ### DNS - Domain Management