chore: Update EMQ X description in RPM and DEB packages

deploy/packages/deb/debian/control

@@ -9,4 +9,4 @@ Homepage: https://www.emqx.com
 Package: emqx
 Architecture: any
 Depends: ${shlibs:Depends}, ${misc:Depends}
-Description: EMQX, a distributed, massively scalable, highly extensible MQTT message broker written in Erlang/OTP
+Description: EMQ X, a distributed, massively scalable, highly extensible MQTT message broker.

deploy/packages/rpm/emqx.spec

@@ -14,7 +14,7 @@ Release: %{_release}%{?dist}
 Summary: emqx
 Group: System Environment/Daemons
 License: Apache License Version 2.0
-URL: https://www.emqx.io
+URL: https://www.emqx.com
 BuildRoot: %{_tmppath}/%{_name}-%{_version}-root
 Provides: %{_name}
 AutoReq: 0
@@ -26,7 +26,7 @@ Requires: libatomic
 %endif
 
 %description
-EMQX, a distributed, massively scalable, highly extensible MQTT message broker written in Erlang/OTP.
+EMQ X, a distributed, massively scalable, highly extensible MQTT message broker.
 
 %prep