khard DESCR update

Hello!

As discussed here: [1] the old project description is misleading.
Below is a patch that takes the new texts from the homepage.
It also adds a little verbiage about compatibility with mutt, alot and
twinkle. These are also stol^Wtaken from the homepage.

[1]
https://github.com/scheibler/khard/issues/303
https://github.com/scheibler/khard/pull/304

Index: Makefile
===================================================================
RCS file: /cvs/ports/productivity/khard/Makefile,v
retrieving revision 1.10
diff -u -p -u -r1.10 Makefile
--- Makefile 11 Mar 2022 19:51:42 -0000 1.10
+++ Makefile 30 Mar 2022 13:21:19 -0000
@@ -1,4 +1,4 @@
-COMMENT = console CardDAV client
+COMMENT = console address book

MODPY_EGG_VERSION = 0.17.0
DISTNAME = khard-${MODPY_EGG_VERSION}
Index: pkg/DESCR
===================================================================
RCS file: /cvs/ports/productivity/khard/pkg/DESCR,v
retrieving revision 1.1.1.1
diff -u -p -u -r1.1.1.1 DESCR
--- pkg/DESCR 1 Oct 2018 10:37:58 -0000 1.1.1.1
+++ pkg/DESCR 30 Mar 2022 13:21:19 -0000
@@ -1,2 +1,3 @@
-Khard is an address book for the console. It creates, reads, modifies and
-removes CardDAV address book entries at your local machine.
+Khard is an address book for the Unix console. It creates, reads, modifies and
+removes vCard address book entries at your local machine. Khard is also
+compatible to the email clients mutt and alot and the SIP client twinkle.